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ASUS ProArt Display PA278QV vs Samsung ViewFinity S9 S90PC

Product A: ASUS

ProArt Display PA278QV

105 of 172 known
Change ASUS ProArt Display PA278QV

Compare the Samsung ViewFinity S9 S90PC with

Product B: Samsung

ViewFinity S9 S90PC

96 of 172 known
Change Samsung ViewFinity S9 S90PC

Compare the ASUS ProArt Display PA278QV with

95 of 164 fields differ

Download CSVDownload JSON
  • 42 different values
  • 53 known for one only
  • 27 the same
  • 42 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Pixel densityA: 108.8ppiB: 217.6ppiSamsung is 108.8 ppi higher.
  2. Brightness (typical, SDR)A: 350nitsB: 600nitsSamsung is 250 nits higher.
  3. Refresh rateA: 75HzB: 60HzASUS is 15 Hz higher.
  4. Power use SDR (EU label)Lower is betterA: 21.6WB: 26.1WASUS is 4.5 W lower.

Refresh rate per resolution

The best rate over any port. Bars run from 0 to 1200 Hz.

5120 × 2880Native for B
ANot listed
B60Hz
2560 × 1440Native for A
A75Hz
BNot listed

Size, drawn to scale

Front and side. Solid lines show the stand at its lowest. Dashed lines show it at its highest.

Weight

0 to 15 kg

Weight with stand
A6.9kg
B7.4kg
Weight without stand
A4.7kg
B4.7kg

All 172 fields

Every value links to where we found it.

AASUS ProArt Display PA278QV
BSamsung ViewFinity S9 S90PC

General

7 of 8 differ
Series
ProArt Display2Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qvRead 15 October 2026Listed under ProArt in the Displays / Desktops, Monitors menu.
ViewFinity S91Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own S90PC creator family.
Model numbers
PA278QV, 90LM05L1-B033703Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026The guide covers PA278QV and PA278QEV. Only PA278QV is stored.
LS27C900PANXZA1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own U.S. SKU and own S27C90 manual column. European S27C902PAU is cited only for matching core hardware and explicit energy reference.
GTIN / EAN
19287657526011Retailer pageamazon.com/dp/B088BC5HMMRead 15 October 2026Amazon US page, ASIN B088BC5HMM: Model Number PA278QV, UPC 192876575260. Compsource lists the same UPC. Distributor sheets list other EAN codes for the 90LM05L1 regional codes, so only the US code is stored.
Not available
Announced
27 May 20208Press articleprofesionalreview.com/2020/05/27/asus-anuncia-los-monitores-proart-pa248qv-y-pa278qvRead 15 October 2026Article dated 2020-05-27 announces the PA248QV and PA278QV for Spain.
Not available
Status
Available11Retailer pageamazon.com/dp/B088BC5HMMRead 15 October 2026The Amazon US listing sells the monitor new. EPREL shows an expected end of placing on the market in 2027-12.
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
$299.9910Press articleaphnetworks.com/news/22457-asus-proart-display-pa248qv-and-pa278qv-now-availableRead 15 October 2026ASUS US release reposted by APH Networks, 2020-06-19: purchase today for 299.99 USD at Amazon, ASUS Official Store, B&H, Micro Center and Newegg. The lead sentence of the same release says 299 USD. Excludes sales tax.
$1,599.995Press releasenews.samsung.com/us/samsung-viewfinity-s9-monitor-now-availableRead 5 October 2026Own U.S. August 28, 2023 availability release explicitly $1,599.99, original launch price rather than later discount.
Launch price (EU)
€3799Press articlecomputerbase.de/2020-06/asus-proart-monitore-pa248qv-pa278qvRead 15 October 2026ComputerBase, 2020-06-04: unverbindliche Preisempfehlung 379 Euro for the PA278QV, a German recommended price including VAT. The Spanish launch article also gives 379 EUR.
Not available
Markets
US, EU8Press articleprofesionalreview.com/2020/05/27/asus-anuncia-los-monitores-proart-pa248qv-y-pa278qvRead 15 October 2026Spain and Germany from the launch articles. EPREL lists the model in the EU and EEA countries. US from the launch release.
Not available
Colours
Black3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Specifications summary p 3-10: Colors Black.
Silver1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own front/rear Silver and Metal Silver stand, one colour configuration.
Segment
Creator2Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qvRead 15 October 2026Designed for creative professionals, from photo and video editing to graphic design.
Creator1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Maker explicitly intended for graphic design, photography and other creative work.

Display

7 of 12 differ
Screen size
27in(68.6 cm)1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Panel Size (inch) 27.
27in(68.6 cm)1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own advertised 27-inch class. Manual precise viewable diagonal separately 26.9 inches.
Viewable screen diagonal
Not available
26.9in(68.3 cm)2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Printed page 33 exact S27C90 column 27 Class, 26.9 inches / 68.4 cm. Not computed from rounded dimensions.
Native resolution
2560 × 1440px1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Resolution 2560x1440.
5120 × 2880px1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own native 5K resolution, not 5120 x 1440 ultrawide.
Aspect ratio
16:91Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Aspect Ratio 16:9.
16:91Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own 16:09 normalized to 16:9, matching native pixel ratio.
Pixel density
108.8ppi
217.6ppi
Pixel pitch
0.2331mm3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026p 3-10: 0.2331 mm x 0.2331 mm. The page rounds it to 0.233 mm.
0.1166mm2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Printed page 33 own horizontal and vertical pitch agree at 0.11655 mm.
Active display area
Width596.74Height335.66mm(23.5 × 13.2 in)1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Display Viewing Area (H x V) 596.74 x 335.66 mm.
Width596.736Height335.664mm(23.5 × 13.2 in)2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Printed page 33 exact own active display area, also U.S. API. Native pixel count and pitch agree at published precision.
Curved
No6Spec databaseshop.aodatacloud.es/wp-content/uploads/datasheet_90LM05L1-B03370.pdfRead 15 October 2026Distributor product sheet for code 90LM05L1-B03370, publication date 23-JUL-2025: Forma de la pantalla Plana (flat). The sheet is a copy of maker data, not an ASUS document.
No1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own explicitly Flat.
Curvature radius
Not available
Not available
Screen surface
Matte1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Display Surface: Anti-Glare. The Amazon US listing also says Matte.
Matte5Press releasenews.samsung.com/us/samsung-viewfinity-s9-monitor-now-availableRead 5 October 2026Own S90PC release explicitly Matte Display. Reflectance percentage not stated.
Anti-reflection coating
Anti-Glare1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Display Surface, verbatim.
Anti-reflection coating4Maker spec sheet (PDF)images.samsung.com/is/content/samsung/assets/de/display/pdf/Datenblatt_Business_Monitor_LS27C902PAUXEN.pdfRead 5 October 2026Original page 1 and page 2 explicitly anti-reflection coating, beyond a generic matte-surface assumption.
Touchscreen
No6Spec databaseshop.aodatacloud.es/wp-content/uploads/datasheet_90LM05L1-B03370.pdfRead 15 October 2026Same sheet: Pantalla tactil: no.
Not available

Panel

12 of 31 differ
Panel type
IPS1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Panel Type: IPS.
IPS1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own IPS. Not the erroneous VA assertion in third-party launch reporting.
Panel type (as published)
IPS1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Panel Type, verbatim.
IPS1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own published technology. Unknown panel maker and part omitted.
Backlight
Not available
Not available
Local dimming
Not available
Not available
Dimming zones
Not available
Not available
Panel maker
Innolux7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Review of 2020-11-02: panel Innolux M270KCJ-L5B (AAS IPS). Not confirmed by ASUS or a teardown. Panels can change between production runs.
Not available
Panel part number
M270KCJ-L5B7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Innolux M270KCJ-L5B, as above.
Not available
Panel generation
Not available
Not available
Subpixel layout
RGB stripe7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Review: standard RGB stripe, with no text fringing concerns.
Not available
Colour depth
8bits1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Display Colors 16.7M, which is 8 bits per channel. The review confirms true 8-bit.
10bits7Reviewtechradar.com/pro/samsung-viewfinity-s9-s27c90-reviewRead 5 October 2026Exact S90PC first-hand review expressly 8-bit plus FRC supporting 1.07 billion colours. Supported total depth 10, not native 10.
Colour depth method
Native7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Review spec list: 16.7 million colours, 8 bits per subpixel without dithering (true 8-bit).
FRC7Reviewtechradar.com/pro/samsung-viewfinity-s9-s27c90-reviewRead 5 October 2026Exact S90PC review explicitly 8-bit panel with FRC. No panel part inferred from that method. The review calls smartphone OSD-slot calibration hardware calibration, but does not expressly establish internal LUT writes required by field help, so hardware_calibration stays unknown.
Displayable colours
16.7 million1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Display Colors 16.7M.
Up to 1 billion1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own literal Max 1B. Panel implementation separately explicit in actual review.
sRGB coverage
100%1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Color Space (sRGB) 100%. The page also says 100% Rec. 709. Coverage or volume and the CIE basis are not stated. The reviewer measured 99% sRGB with adjusted settings.
100%1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own typical sRGB claim. Review-only measured gamut values excluded from this field.
DCI-P3 coverage
Not available
99%1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own typical maker DCI coverage, expressly DCI-P3 in own release. CIE 1976 explicitly identified in own July 17 release footnote 1.6Press releasenews.samsung.com/us/samsung-viewfinity-s9-an-astounding-new-5k-monitorRead 5 October 2026Own July 17 release DCI-P3 99% claim footnote 1 explicitly colour representation calculated in CIE 1976. Not reviewer measured gamut.
Adobe RGB coverage
Not available
Not available
Rec. 2020 coverage
Not available
Not available
NTSC coverage
Not available
Not available
Factory calibrated
Yes2Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qvRead 15 October 2026Factory calibrated and Calman Verified.
Yes1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Factory Tuning Yes, with own release explicitly sRGB factory calibration before shipment.6Press releasenews.samsung.com/us/samsung-viewfinity-s9-an-astounding-new-5k-monitorRead 5 October 2026Own sRGB factory calibration completed before shipment. Smartphone Smart Calibration is separately supported, but internal hardware LUT writes are not expressly established here, so hardware_calibration remains omitted.
Claimed Delta E
22Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qvRead 15 October 2026Published as Delta E < 2. The colour space and whether it is an average or maximum are not stated. The German tab says Color Accuracy dE <= 2. Bound stored as 2.
26Press releasenews.samsung.com/us/samsung-viewfinity-s9-an-astounding-new-5k-monitorRead 5 October 2026Own producer claim Delta E < 2, with footnote factory calibration completed and measured in sRGB before shipment. Average versus maximum and formula unstated. Value is a strict upper-bound claim, not an exact measured error.
Paper calibration report in box
Yes1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Accessories (varies by region) list a Color pre-calibration report. The manual says Color calibration testing report.
Not available
Hardware calibration support
Not available
Not available
Static contrast ratio
1,000:11Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Contrast Ratio (Typ.) 1000:1. The manual's 100,000,000:1 with ASCR on is dynamic and not stored.
1,000:11Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own malformed 1000:01:00 normalized to 1000:1, independently explicit maker launch and original sheet.
Brightness (typical, SDR)
350nits1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Brightness (Typ.) 350 cd/m2. Window and mode are not stated. The manual says the same.
600nits1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own typical 600 cd/m². Not a separate HDR peak claim.
Brightness (maker minimum)
Not available
480nits1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own guaranteed minimum 480 cd/m², not minimum brightness slider setting.
Peak brightness (HDR)
Not available
Not available
HDR peak test window
Not available
Not available
Full-screen brightness
Not available
Not available
HDR formats
Not available
HDR108Reviewparkablogs.com/content/samsung-viewfinity-s9-monitor-designer-reviewRead 5 October 2026Exact own-model first-hand review explicitly HDR10. No other HDR format or certification inferred.9Reviewchip.de/test/samsung-viewfinity-s9-s27c902pau-im-test_323411Read 5 October 2026Exact own-model first-hand review explicitly HDR10. No other HDR format or certification inferred.
HDR certification
None4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_384209_EN.pdfRead 15 October 2026Energy class and on-mode power for HDR are n.a., so HDR is not implemented. ASUS lists no HDR format or DisplayHDR level. Stored as none.
Not available
Viewing angle (horizontal)
178°1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Viewing Angle (CR>=10, H/V) 178/178.
178°1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own horizontal viewing-angle claim.
Viewing angle (vertical)
178°1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Viewing Angle (CR>=10, H/V) 178/178.
178°1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own vertical viewing-angle claim.

Refresh rate and motion

12 of 22 differ
Refresh rate per resolution and port
AASUS ProArt Display PA278QV
Refresh rate per resolution and port. The top rate is in bold.
ResolutionPort not listed
2560 × 1440Native75Hz
Source1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Refresh Rate (Max) 75Hz at the 2560x1440 native resolution. The manual's supported-mode list has 2560x1440 at 74.924 Hz. The page does not say which input carries 75 Hz, so no input is stored. Bit depth and chroma are not stated.
BSamsung ViewFinity S9 S90PC
Refresh rate per resolution and port. The top rate is in bold.
ResolutionDisplayPort 1.4Thunderbolt 4
5120 × 2880Native60Hz60Hz
Source2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own page 33 explicit maximum native 5120 x 2880 at 60 Hz plus own page 28 matched 5K60 DisplayPort and Thunderbolt signals. DisplayPort row refers to physical Mini DP socket. Input Signal Plus must be On per page 30 for native 5K. GPU, cable and firmware compatibility apply. Unknown per-mode depth/chroma/DSC omitted. USB-C fallback native ceiling is not separately scoped in page 28, so no extra USB-C mode row assumed. Lower preset timings alone are not maxima. Regulatory PIS 75 Hz default is inconsistent with this explicit native maximum and maker 60 Hz.
Max refresh rate
75Hz
60Hz
Max refresh rate at native resolution
75Hz
60Hz
Max refresh rate over DisplayPort
Not available
60Hz
Max refresh rate over HDMI
Not available
Not available
Max refresh rate over USB-C
Not available
60Hz
Max refresh rate at 10-bit
Not available
Not available
Native refresh rate
75Hz1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Refresh Rate (Max) 75Hz, with a digital signal frequency of 46~75 Hz (V).
60Hz1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Max 60 Hz at native 5K. Regulatory default 75 Hz conflicts and is not substituted.
Overclocked refresh rate
Not available
Not available
Dual mode
Not available
Not available
Minimum fixed refresh rate
Not available
Not available
Adaptive sync technologies
Adaptive-Sync1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026VRR Technology: Yes (Adaptive-Sync). ASUS does not claim FreeSync or G-SYNC Compatible. The reviewer found FreeSync and G-SYNC Compatible working, but Nvidia had not validated it.
Not available
VRR range per port
AASUS ProArt Display PA278QV
InputMin (Hz)Max (Hz)
DisplayPort4875
HDMI4875
Source2Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qvRead 15 October 2026Adaptive-Sync technology (48~75Hz). The manual says it works on DisplayPort and HDMI only, so both are stored.
BSamsung ViewFinity S9 S90PC
Not available
Low framerate compensation
No7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Review: FreeSync range 48-75 Hz, FreeSync deactivates below 48 FPS, and LFC is not supported.
Not available
Response time (maker GtG claim)
5ms1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Response Time 5ms (GTG). The manual says < 5 ms (grey to grey). The bound is kept as 5. Overdrive (Trace Free) level is not stated.
5ms1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own 5 ms GtG. Statistical definition, overdrive setting and endpoint unstated.
Response time (maker MPRT claim)
Not available
Not available
Overdrive settings
Not available
Not available
Motion blur reduction
Yes3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026OSD p 3-2: Rapid Rendering Mode simulates high refresh rate performance by generating different backlight frequencies. It works only at 75 Hz with Adaptive-Sync off. The review calls it a strobe backlight mode. The page lists Motion Sync: Yes.
Not available
Blur-reduction technology
Rapid Rendering3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026OSD p 3-2: Rapid Rendering Mode.
Not available
Blur reduction works with VRR
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026OSD p 3-2: to activate Rapid Rendering, turn off Adaptive-Sync.
Not available
Flicker-free (claimed)
Yes1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Flicker-free: Yes. Certificate list names TUV Flicker-free.
Yes1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Flicker Free Yes.
Black frame insertion
Not available
Not available

Measured

5 of 12 differ
Input lag at maximum refresh rate
5.12ms7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 20265.12 ms at 75 Hz (the highest rate), SMTT 2.0 with a camera and over 30 repeat readings, Windows 10, GTX 1080 Ti over DisplayPort. Adaptive-Sync was off, since the reviewer could not measure with it on. MonitorNerds says 8 ms with no method, which is not used.
Not available
Input lag at 60 Hz
6.73ms7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 20266.73 ms at 60 Hz, same method.
Not available
Average response time (measured)
Not available
Not available
Overshoot (measured)
Not available
Not available
Contrast ratio (measured)
990:17Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Average 990:1 with only brightness changed, measured with an X-Rite i1Display Pro after a 2 hour warm-up and no ICC profile. The peak was 1036:1 in the sRGB preset and 965:1 under the reviewer's test settings.
171:19Reviewchip.de/test/samsung-viewfinity-s9-s27c902pau-im-test_323411Read 5 October 2026Exact S27C902PAU tested simultaneous checkerboard contrast (Schachbrett-Kontrast) 171:1. Distinct from maker static 1000:1, whose measurement method and conditions are unstated. Reviewer picture mode, brightness and calibration conditions unstated.
SDR brightness (measured)
431nits7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026431 cd/m2 white at 100% brightness, X-Rite i1Display Pro, Rapid Rendering off. Minimum 57 cd/m2 at 0%. Window size is not stated. MonitorNerds gives 435 cd/m2 without conditions.
629nits7Reviewtechradar.com/pro/samsung-viewfinity-s9-s27c90-reviewRead 5 October 2026Own tested Eco/native-colour-profile maximum 629 cd/m² and 61 W. SDR section explicitly contrasts films having higher HDR peaks. Pattern/window and instrument unstated. Maker typical 600 and other review maxima remain separate. Review erroneous 98 W host charging excluded in favour of own 90 W.
HDR brightness in a real scene (measured)
Not available
Not available
PWM flicker frequency (measured)
20kHz7Measurementpcmonitors.info/reviews/asus-pa278qvRead 15 October 2026Review: the PA278QV uses PWM with a cycling frequency of about 20 kHz to reduce backlight brightness, which TUV Rheinland counts as flicker free. The review does not say how the figure was found.
Not available
VRR range (measured)
Not available
Not available
Colour accuracy (measured Delta E)
Not available
Not available
Gray uniformity (measured)
Not available
Not available
Reflections (measured)
Not available
Not available

Connectivity

13 of 19 differ
Video inputs
AASUS ProArt Display PA278QV
TypeVersionCount
DisplayPort1.21
Mini DisplayPortNot available1
HDMI1.41
DVINot available1
Source1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026DisplayPort 1.2 x 1, Mini DisplayPort x 1, HDMI (v1.4) x 1, Dual-Link DVI x 1. Mini DisplayPort and DVI versions are not stated. HDCP is listed as Yes without a version. Raw link bandwidth is not stated. PCMonitors lists two HDMI and two DVI ports, which conflicts with ASUS and the manual's rear view, and is not used.
BSamsung ViewFinity S9 S90PC
TypeVersionCountMax bandwidth (Gbps)HDCP
Thunderbolt41402.2
Mini DisplayPort1.41Not available2.2
Source1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Own one Thunderbolt 4 and one Mini DP, each HDCP 2.2. Physical Mini DP uses DisplayPort protocol, with 1.4 explicitly in CHIP exact review. Thunderbolt raw 40 Gbps separately own manual. Thunderbolt USB-C fallback shares the same physical socket, not an additional input. Three other USB-C sockets are downstream data/charging only. Unknown DSC omitted. Parka miniDP version 2.2 conflicts with actual 1.4 and appears confused with HDCP 2.2, so is excluded.9Reviewchip.de/test/samsung-viewfinity-s9-s27c902pau-im-test_323411Read 5 October 2026Exact S27C902PAU first-hand review directly lists Mini DisplayPort 1.4. Core matches manufacturer S90PC manual. Not Parka mistaken Mini DP 2.2 or an inferred DP version from resolution.
HDMI ports
1
0
DisplayPort ports
2
1
Highest HDMI version
1.4
Not available
Highest DisplayPort version
1.2
1.4
HDMI features
Not available
Not available
USB-C video (DP Alt Mode)
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Back view p 1-4 is the complete port list: Kensington slot, power switch, AC-IN, DVI, HDMI, DisplayPort, Mini DisplayPort, audio-in, earphone jack, USB Type-B and USB Type-A. No USB-C.
Yes2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own S9 page 24 accepts Thunderbolt 4 or USB Type-C source cable at same upstream USB-C socket, with page 25 explicitly non-Thunderbolt USB-C host use. This is separate from downstream USB-C data ports. No fallback maximum or DSC inferred.
USB-C power delivered
Not available
90W2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own S9 page 24 maximum 90 W host PD, compatible host input and certified cable required. Downstream USB-C ports separately maximum 4.5 W each. Not aggregate charging or consumption.
Thunderbolt
Not available
Not available
USB upstream ports
AASUS ProArt Display PA278QV
ConnectorUSB versionCount
USB-B3.2 Gen 11
Source3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Back view p 1-4: USB 3.2 Gen 1 Type-B for the upstream cable.
BSamsung ViewFinity S9 S90PC
ConnectorCount
USB-C1
Source2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own page 24 one Thunderbolt 4 upstream physical USB-C port. Native USB protocol fallback revision is unreported, so no USB 3.0 or USB4 value inferred from downstream or Thunderbolt bandwidth.
USB downstream hub ports
AASUS ProArt Display PA278QV
ConnectorUSB versionCount
USB-A3.2 Gen 14
Source1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026USB Hub: 4x USB 3.2 Gen 1 Type-A. The manual adds one Type-B upstream port.
BSamsung ViewFinity S9 S90PC
ConnectorUSB versionCount
USB-C3.03
Source1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Own USB Ports 3 / USB Hub Version 3.0. Own manual page 24 explicitly distinguishes three downstream sockets from one upstream. Six Colors review USB2.0 statement excluded in favour of own manufacturer and actual Parka USB3.0 transfer verification.
KVM switch
Not available
No8Reviewparkablogs.com/content/samsung-viewfinity-s9-monitor-designer-reviewRead 5 October 2026Own first-hand S90PC review explicitly KVM No, corroborated CHIP exact S27C902PAU review. Singapore bundle and warranty not transferred. Review Mini DP 2.2 mistaken version excluded.
Daisy chain (MST)
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Specifications p 3-10: Digital Output No.
No4Maker spec sheet (PDF)images.samsung.com/is/content/samsung/assets/de/display/pdf/Datenblatt_Business_Monitor_LS27C902PAUXEN.pdfRead 5 October 2026Original exact S90PC page 2 expressly Daisy Chain Nein. Single host input is not a downstream Thunderbolt video output.
Ethernet
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026The back view port list has no Ethernet socket.
No2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Complete own S27C90 page 24 physical inventory contains Thunderbolt USB-C, three downstream USB-C, Mini DP, camera pogo interface and DC. No analogue audio/headset, RJ45 or optical socket. Built-in microphone and wireless audio are separate.
3.5 mm headphone output
Yes1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Earphone Jack: Yes.
No2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Complete own S27C90 page 24 physical inventory contains Thunderbolt USB-C, three downstream USB-C, Mini DP, camera pogo interface and DC. No analogue audio/headset, RJ45 or optical socket. Built-in microphone and wireless audio are separate.
3.5 mm microphone input
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Back view p 1-4: the audio-in port connects a PC audio source by the bundled audio cable, so it is a line input for the speakers. No microphone input.
No2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Complete own S27C90 page 24 physical inventory contains Thunderbolt USB-C, three downstream USB-C, Mini DP, camera pogo interface and DC. No analogue audio/headset, RJ45 or optical socket. Built-in microphone and wireless audio are separate.
Optical out
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026The back view port list has no optical output.
No2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Complete own S27C90 page 24 physical inventory contains Thunderbolt USB-C, three downstream USB-C, Mini DP, camera pogo interface and DC. No analogue audio/headset, RJ45 or optical socket. Built-in microphone and wireless audio are separate.
Picture in picture
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026The OSD menus on pp 3-1 to 3-9 (ProArt Preset, Blue Light Filter, ProArt Palette, Image, Sound, Input Select, System Setup, Shortcut) have no PIP or PBP function.
Not available
Picture by picture
No3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026The OSD menus on pp 3-1 to 3-9 have no PIP or PBP function.
Not available

Smart features

4 of 4 differ
Smart platform
Not available
Tizen1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Operating System Tizen. App and service availability vary by region and account.
Wi-Fi
Not available
Wi-Fi 51Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own WiFi5, not later Wi-Fi 6 inferred from firmware updates.
Bluetooth
Not available
4.21Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own BT4.2.
Remote control
Not available
Yes1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Remote Controller accessory Yes and U.S. release explicitly included remote.

Audio and camera

3 of 5 differ
Speakers
Yes1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Speaker: Yes (2Wx2).
Yes1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Speaker Yes. German sheet contradictory separate Lautsprecher Nein row excluded in favour of own U.S. and Canada explicit speakers.
Number of speakers
21Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Speaker: Yes (2Wx2).
21Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own speaker output 5W x 2, independently maker launch and actual review.
Speaker power per channel
2W1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 20262W x 2, so 2 W per speaker. The manual says 2 W x 2 Stereo, RMS.
5W1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own 5W x 2, per speaker rather than 10 W total.
Webcam
Not available
Yes1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own bundled 4K SlimFit camera. It attaches to the display and is detachable, rather than permanently embedded in the bezel. This field records the supplied webcam.
Microphone
Not available
Yes2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own S27C90 controller image page 20 shows mic switch and page 21 explicitly describes physical microphone on/off. Regulatory voice-recognition No is not substituted for actual hardware absence.

Ergonomics and controls

9 of 15 differ
Stand height adjustment
150mm1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Height Adjustment: 0~150mm.
120mm1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own 120 mm travel, +/-5 mm tolerance. Overall minimum height not computed.
Tilt
Forward5°Backward35°1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Tilt: Yes (+35 to -5 degrees). 5 degrees forward, 35 backward, as the manual shows.
Forward2°Backward15°1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own -2/+15 degrees, +/-2 degree tolerance. Positive directional magnitudes.
Swivel
Left90°Right90°1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Swivel: Yes (+90 to -90 degrees).
Left0°Right0°4Maker spec sheet (PDF)images.samsung.com/is/content/samsung/assets/de/display/pdf/Datenblatt_Business_Monitor_LS27C902PAUXEN.pdfRead 5 October 2026Original page 3 expressly stand swivel Nein. Tilt and pivot remain separately available. No absent-angle inference.
Pivot
Counterclockwise90°Clockwise90°1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Pivot: Yes (+90 to -90 degrees).
Counterclockwise92°Clockwise92°1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own -92/+92 degrees, +/-2 degree tolerance. Not swivel.
Removable stand
Yes3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Detaching the arm/base p 2-2: the detachable arm and base is designed for VESA wall mount.
Yes2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own S27C90 stand attachment page 9 and wall-mount procedure page 19. Detachable stand, not a computed inference from VESA alone.
VESA mount
100 x 1001Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026VESA Wall Mounting: 100x100mm.
100 x 1001Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own explicit 100 x 100 mm pattern, also manual own model.
VESA adapter needed
Not available
Not available
Security lock slot
Yes1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Kensington Lock: Yes.
Not available
On-screen menu controls
Buttons3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Front view p 1-2: power, Menu, Close, QuickFit and two Shortcut buttons. No joystick.
Buttons, Remote, Software2Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Own page 20 Controller button opens Home/Settings/Return/Source control menu. Included remote operates display menus and settings. Rocker/directional controller not a confirmed separate joystick. Layout-only Easy Setting Box excluded.6Press releasenews.samsung.com/us/samsung-viewfinity-s9-an-astounding-new-5k-monitorRead 5 October 2026Own exact U.S. release SmartThings phone controls luminance, gamma, colour temperature and colour space. Mobile software operates display settings. Desktop control software remains unproved and control_software is omitted.10Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Exact same-SKU current e-manual printed page 85 mobile SmartThings virtual remote includes four directional keys. Software control here is mobile app display/menu control, not a proved desktop application.
Desktop software
Not available
Not available
User firmware updates
Not available
Yes10Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Current exact same-SKU Canada support publishes May 2, 2025 English e-manual. Printed page 129 Software Update/Update Now via internet or USB, with explicit menu path. Current exact support publishes OS firmware packages, no installation performed. Generic OLED or other-model menu features not inherited.
Ambient light sensor
Not available
Yes7Reviewtechradar.com/pro/samsung-viewfinity-s9-s27c90-reviewRead 5 October 2026Exact first-hand review identifies physical ambient light sensor interrupting the front clean lines. PIS ABC No describes regulatory function, not physical sensor absence.
Presence sensor
Not available
Not available
RGB lighting
Not available
Not available
Gaming menu features
Not available
Virtual Aim Point, Game Bar, Super Ultrawide GameView, Game Mode1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own exact named functions. Gaming Hub is streaming service, not a native refresh or VRR technology. Model-generic e-manual options not automatically inherited.

OLED care

None of 3 known
OLED care
Not available
Not available
Burn-in covered by warranty
Not available
Not available
Burn-in warranty length
Not available
Not available

Dimensions and weight

5 of 7 differ
Dimensions with stand
Width615Height (lowest)382Height (highest)532Depth226mm(24.2 × 15 to 20.9 × 8.9 in)1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 202661.50 x 53.20 x 22.60 cm at the highest position, and 615 x (382~532) x 226 mm. The manual gives the same in mm with highest and lowest positions.
Width611.4Depth135.3mm(24.1 × 5.3 in)3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU metric with-stand width and depth. Single 530.7 mm height has no identified stand position, so minimum/maximum remain omitted.
Dimensions without stand
Width615Height372Depth51mm(24.2 × 14.6 × 2 in)1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Phys. Dimension without Stand 615 x 372 x 51 mm. The manual agrees.
Width611.4Height364.1Depth27.1mm(24.1 × 14.3 × 1.1 in)3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same North American SKU metric body, matches original manufacturer sheet. Includes body, not removable stand. Camera inclusion in these body dimensions unstated.
Stand footprint
Not available
Not available
Weight with stand
6.9kg(15.2 lb)3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026p 3-10: Weight (Esti.) 6.9 kg (Net), 4.7 kg (without stand), 9.2 kg (Gross). The ASUS spec page says 7.56 and 4.83 kg, the ASUS launch release 7.72 kg and a distributor datasheet 7.72 and 4.96 kg. The manual is used, as the maker's manual wins over the page. The model covers regional builds, so the true figure may vary. Cables are not stated.
7.4kg(16.3 lb)3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU directly 7.4 kg, matching original sheet and U.S. rounded 16.3 lb. Camera/cable inclusion in net weight unstated.
Weight without stand
4.7kg(10.4 lb)3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026p 3-10: 4.7 kg without stand. See the weight_with_stand_kg note for the conflicting figures.
4.7kg(10.4 lb)3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU directly 4.7 kg, matching original sheet and U.S. 10.4 lb rounding.
Box dimensions
Not available
Width820Height133Depth423mm(32.3 × 5.2 × 16.7 in)3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU package W x H x D, matching producer sheet. Flat-packed orientation retained.
Box weight
Not available
10.7kg(23.6 lb)3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU shipping 10.7 kg, matching original sheet and above net with stand.

Power

10 of 13 differ
Power supply
Internal3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026p 3-10: AC input voltage 100~240V, with a power cord and no external adapter. EPREL says Internal.
External adapter1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own External Adaptor and separate DC input. Rated adapter output watts omitted rather than replaced with maximum monitor consumption.
Adapter rating
Not available
Not available
Input voltage
100-240 V AC, 50/60 Hz1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Voltage 100-240V, 50/60Hz.
100-240 V AC, 50/60 Hz1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own mains range. Frequency in own manual page 34. Not 20 V DC device input.
Power use (typical)
20.3W3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026p 3-10: Power On < 20.3 W (Typ.), measured at a screen brightness of 200 nits without audio, USB or card reader. The bound is stored. The ASUS page says 12.5 W, EPREL 21.6 W and the launch release < 58.67 W, which conflict.
Not available
Power use (max)
Not available
182W1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own maximum operating power. Whether host charging and peripherals are included is unstated. Not adapter output rating.
Power use SDR (EU label)
21.6W4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_384209_EN.pdfRead 15 October 2026On mode power demand in SDR 21.6 W. A distributor datasheet shows 32.1 W and class G, which conflicts with the EPREL record and is not used.
26.1W11EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-productfiche.pdfRead 5 October 2026English page 1 row 4 on-mode SDR. Explicit European S27C902PAU energy reference, not U.S. typical operation. The regulatory default 75 Hz conflicts with own manual native maximum 60 and is not inherited.
Power use HDR (EU label)
Not available
68W11EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-productfiche.pdfRead 5 October 2026English page 1 row 6 on-mode HDR. Explicit European S27C902PAU energy reference, not U.S. typical operation. The regulatory default 75 Hz conflicts with own manual native maximum 60 and is not inherited.
Standby power
0.5W3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026p 3-10: Standby < 0.5 W (Typ.). EPREL says 0.5 W. Bound stored.
0.5W11EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-productfiche.pdfRead 5 October 2026English page 1 row 8 ordinary standby. Separate networked standby 2 W is not this field. Explicit European S27C902PAU energy reference, not U.S. typical operation. Off mode N/A stays unknown.
Off-mode power
0.3W4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_384209_EN.pdfRead 15 October 2026Off mode power demand 0.3 W. The manual and page say 0 W with the hard power switch off.
Not available
EU energy class SDR
E4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_384209_EN.pdfRead 15 October 2026Energy Efficiency Class for SDR: E.
F11EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-productfiche.pdfRead 5 October 2026English page 1 row 3. Explicit European S27C902PAU energy reference, not U.S. typical operation.
EU energy class HDR
Not available
G11EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-productfiche.pdfRead 5 October 2026English page 1 row 5. Explicit European S27C902PAU energy reference, not U.S. typical operation.
Energy per 1000 h SDR
22kWh5EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_384209.svgRead 15 October 2026Energy label SDR 22 kWh/1000h, rounded from 21.6 W.
26kWh12EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-energylabel.pdfRead 5 October 2026Own visually read S27C902PAU EU label 26 kWh/1000h, F. Not a computed rounding from PIS 26.1 W.
Energy per 1000 h HDR
Not available
68kWh12EU energy label (EPREL)images.samsung.com/is/content/samsung/p6/common/energylabel/common-energylabel-ls27c902pauxen-energylabel.pdfRead 5 October 2026Own visually read EU HDR label 68 kWh/1000h, G.

Certifications

4 of 9 differ
VESA ClearMR
Not available
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
TÜV Low Blue Light, TÜV Flicker-free1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Certificate list: TUV Low Blue Light and TUV Flicker-free.
Not available
Low blue light
Software3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026OSD p 3-3: the Blue Light Filter has levels 0 to 4. Level 4 complies with TUV Low Blue Light certification. It is a selectable picture setting.
Software1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own Eye Saver Mode selectable filter. TÜV Eye Care is not proof of hardware low-blue-light panel method.
ENERGY STAR
Yes3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Notices p iv: ENERGY STAR complied product. The compliance list on p 3-11 names Energy Star. sRGB mode meets Energy Star requirements.
Not available
TCO Certified
Not available
Not available
EPEAT
Not available
Not available
Colour certifications
Calman Verified1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Certificate list: Calman Verified.
Not available
Other certifications
Mac Compliance1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Certificate list: Mac Compliance.
Pantone Validated, UL Glare Free, TÜV Eye Care1Maker product pagesamsung.com/us/monitors/flat/27-viewfinity-s9-5k-monitor-with-thunderbolt-4-matte-display-and-smart-features-sku-ls27c900panxzaRead 5 October 2026Exact U.S. model data. Own explicit compliance rows. No unproved VESA DisplayHDR certification inferred from HDR Yes.4Maker spec sheet (PDF)images.samsung.com/is/content/samsung/assets/de/display/pdf/Datenblatt_Business_Monitor_LS27C902PAUXEN.pdfRead 5 October 2026Original page 3 explicitly TÜV Eye Care, UL Glare Free and Pantone Validated. Certificate IDs not stated.

In the box

2 of 2 differ
In the box
LCD monitor, Monitor base, Quick start guide, Warranty card, Power cord, HDMI cable, DisplayPort cable, DisplayPort cable (mini DP to DP), USB B to A cable, Audio cable, Color calibration testing report, ProArt welcome card3Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PA278QV/PA278QV_English.pdfRead 15 October 2026Package contents p 1-1. HDMI, DisplayPort, mini DP to DP, USB B to A and audio cables are marked optional in the manual and are stored without the marker. The ASUS page says accessories vary by region.
Monitor, Stand, AC/DC adapter, Power cable, Thunderbolt 4 cable, Remote control, 4K SlimFit camera, Pogo adapter3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU accessory rows, own U.S. accessories and own manual stand/camera/power assembly. Camera detachable. Paper calibration report and regional Mini DP cable inclusion unproved.
Cables included
AASUS ProArt Display PA278QV
Type
Power cord
HDMI cable
DisplayPort cable
DisplayPort-to-miniDP cable
USB Type-B to A cable
Audio cable
Source1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026Accessories (varies by region): USB Type-B to A cable, power cord, HDMI cable, DisplayPort-to-miniDP cable, DisplayPort cable, audio cable. Counts and regional bundles are not stated. The manual marks all signal cables as optional.
BSamsung ViewFinity S9 S90PC
Type
Power cable
Thunderbolt 4 cable
Source3Maker product pagesamsung.com/ca/monitors/high-resolution/viewfinity-s9-27-inch-ls27c900panxzaRead 5 October 2026Exact same SKU and own U.S. accessories explicitly power cable 1.5 m and Thunderbolt 4 cable Yes. Counts unstated. Singapore Mini DP cable bundle not inherited.

Warranty

2 of 2 differ
Manufacturer warranty (source market)
3years1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026LCD ZBD Warranty: Yes (3 yr). EPREL gives a minimum general guarantee of 3 years. Amazon US names 5 years with online registration, which is not the base term.
Not available
Dead pixel policy
LCD zero bright dot (ZBD) warranty, 3 years1Maker product pageasus.com/us/displays-desktops/monitors/proart/proart-display-pa278qv/techspecRead 15 October 2026LCD ZBD Warranty: Yes (3 yr). Market scope is not stated.
Not available

Both are also in the API. Back to all monitors.