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LG UltraGear 27GX704A vs LG UltraGear evo GX9 39GX950B

Product A: LG

UltraGear 27GX704A

90 of 172 known
Change LG UltraGear 27GX704A

Compare the LG UltraGear evo GX9 39GX950B with

Product B: LG

UltraGear evo GX9 39GX950B

104 of 172 known
Change LG UltraGear evo GX9 39GX950B

Compare the LG UltraGear 27GX704A with

80 of 164 fields differ

Download CSVDownload JSON
  • 47 different values
  • 33 known for one only
  • 28 the same
  • 56 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Power use HDR (EU label)Lower is betterA: 22.5WB: 45.9WUltraGear 27GX704A is 23.4 W lower.
  2. Power use SDR (EU label)Lower is betterA: 23.5WB: 40.3WUltraGear 27GX704A is 16.8 W lower.
  3. Refresh rateA: 240HzB: 165HzUltraGear 27GX704A is 75 Hz higher.
  4. Pixel densityA: 110.8ppiB: 142.5ppiUltraGear evo GX9 39GX950B is 31.7 ppi higher.
  5. ContrastA: 1,500,000:1B: 1,850,000:1UltraGear evo GX9 39GX950B is 1.2 times higher.
  6. Brightness (typical, SDR)A: 275nitsB: 335nitsUltraGear evo GX9 39GX950B is 60 nits higher.
  7. Peak brightness (HDR)A: 1,300nitsB: 1,500nitsUltraGear evo GX9 39GX950B is 200 nits higher.

Refresh rate per resolution

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

5120 × 2160Native for B
ANot listed
B165Hz
3840 × 2160
ANot listed
B165Hz
2560 × 1440Native for A
A240Hz
BNot listed
2560 × 1080
ANot listed
B330Hz
1920 × 1080
ANot listed
B330Hz

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
A7.2kg
B10.7kg
Weight without stand
A4.8kg
B6.8kg
Box weight
A9.9kg
B16.2kg

All 172 fields

Every value links to where we found it.

ALG UltraGear 27GX704A
BLG UltraGear evo GX9 39GX950B

General

6 of 8 differ
Series
UltraGear OLED1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The UK title says UltraGear OLED GX7 Gaming Monitor.
UltraGear evo GX91Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own product title.
Model numbers
27GX704A-B, 27GX704A-B.AUS, 27GX704A-B.AEK, 27GX704A-B.AEU, 27GX704A1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Page title and SKU 27GX704A-B.AEK.EEUK.UK.C. LG Germany lists 27GX704A-B.AEU and the US and Canada pages list 27GX704A-B.AUS. The EPREL model identifier is 27GX704A.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Title 27GX704A-B.AUS.4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026Model identifier 27GX704A.7Maker product pagelg.com/de/monitore/gaming/27gx704a-bRead 23 October 2026SKU 27GX704A-B.AEU.EEDG.DE.C.
39GX950B-B1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own U.S. SKU, matching exact manual cover.
GTIN / EAN
195174133026, 8806096600047, 88060965999211Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026EAN 8806096600047 from the UK page data, EAN 8806096599921 from the Germany page data and UPC 195174133026 from the US spec sheet and the Canada page data.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026UPC 195174133026 for the US model 27GX704A-B.AUS.7Maker product pagelg.com/de/monitore/gaming/27gx704a-bRead 23 October 2026Page data lists EAN 8806096599921 for 27GX704A-B.AEU.
1951741464911Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Exact own AllInfo Warranty UPC. Regional Japanese JAN code is not inherited.
Announced
Not available
Not available
Status
Available1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The UK, Germany and Canada pages carry an active status.
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
Not available
$1,799.9911Press releaselg.com/us/newsroom/media-entertainment/game-on-lg-kicks-off-pre-orders-for-ultragear-evo-gx9-and-gm9-gaming-monitorsRead 5 October 2026April 7, 2026 maker U.S. preorder release explicitly own 39GX950B-B $1799.99. Optional warranty extension excluded. Price does not itself prove retail availability.
Launch price (EU)
€59913Press articlepcgameshardware.de/Monitor-Display-Hardware-154105/News/LG-Ultragear-27GX704A-B-OLED-mit-Preissturz-1492408Read 23 October 2026PCGH 2026-01-26 states a manufacturer UVP of 599 euro for Germany, and LG Germany lists 599 euro. The article gives no launch-day price, so 599 is the manufacturer list price and not a verified launch price.
Not available
Markets
US, CA, GB, EU1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026UK page and the LG Germany and Canada pages are active. The US spec sheet covers the US.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026US sheet.7Maker product pagelg.com/de/monitore/gaming/27gx704a-bRead 23 October 2026LG Germany page, status active.
Not available
Colours
Black1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Page title ends with Black.
Not available
Segment
Gaming1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Sold as an UltraGear gaming monitor.
Gaming1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own maker gaming monitor classification.

Display

10 of 12 differ
Screen size
26.5in(67.3 cm)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Size 26.5 inch (67.32 cm). LG markets it as 27 inch. The EPREL sheet gives 67.4 cm and 27 inches.
39in(99.1 cm)1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Exact U.S. AllInfo 39-inch class. Japanese own base-model table separately gives precise 38.86-inch viewable panel.
Viewable screen diagonal
26.5in(67.3 cm)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Size 26.5 inch is the panel diagonal. The EPREL screen diagonal is 67.4 cm, which is 26.5 inch.4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026Screen diagonal 67.4 cm, 27 inch class. Visible screen area 19.4 dm2.
38.86in(98.7 cm)3Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own original 39GX950B-B technical table precise 38.86-inch panel, corroborated current producer catalogue. U.S. 39-inch class and Spanish 38.6-rounded label are less precise.
Native resolution
2560 × 1440px1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Resolution 2560 x 1440.
5120 × 2160px1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own AllInfo native 5120 x 2160. Not older 39-inch WQHD hardware.
Aspect ratio
16:91Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Aspect Ratio 16:9.
21:91Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Maker nominal 21:9 class. The exact pixel ratio 64:27 is different.
Pixel density
110.8ppi
142.5ppi
Pixel pitch
0.2292mm1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Pixel Pitch 0.2292 x 0.2292 mm.
0.1776mm1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own horizontal and vertical 0.1776 mm, independently original Japanese base-model table. Active area 909 x 384 fits this published precision.
Active display area
Not available
Width909Height384mm(35.8 × 15.1 in)3Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own base-model technical table active 909 x 384 mm. Independent catalogue agrees. These are published whole-mm values, not inferred from pitch.
Curved
Not available
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own Curved Yes.
Curvature radius
Not available
1,500mm1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 1500R curvature. Fixed, not a bendable screen.
Screen surface
Glossy1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Key features: Glare panel. The US spec sheet says Glossy OLED Display.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 202627 inch QHD Glossy OLED Display.8Reviewrtings.com/monitor/reviews/lg/27gx704a-bRead 23 October 2026RTINGS text: glossy coating.
Matte8Reviewtechradar.com/computing/monitors/lg-ultragear-evo-39gx950b-b-reviewRead 5 October 2026Own exact model Design section explicitly matte finish. No numerical reflections or unstated brightness measurement inferred.
Anti-reflection coating
Not available
Not available
Touchscreen
Not available
Not available

Panel

11 of 31 differ
Panel type
WOLED1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Key features and spec table: OLED. The feature text says LG WOLED. RTINGS lists the sub-type as WOLED.8Reviewrtings.com/monitor/reviews/lg/27gx704a-bRead 23 October 2026RTINGS review published 2026-04-24: panel type OLED, sub-type WOLED. RTINGS calls it a third-gen WOLED panel. Notebookcheck calls it second-gen, so no panel generation is stored.
WOLED6Reviewrtings.com/monitor/reviews/lg/39gx950b-bRead 5 October 2026Public own 39GX950B-B Differences Between Sizes table explicitly fourth-gen WOLED/Tandem OLED. The old 45-inch row has incorrect bandwidth and is not inherited. Numeric locked results are omitted.
Panel type (as published)
OLED with MLA+1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature heading: OLED with MLA+ (Micro Lens Array+).
Tandem OLED6Reviewrtings.com/monitor/reviews/lg/39gx950b-bRead 5 October 2026Own public introduction and producer original Japanese page identify Tandem OLED. Not RGB-stripe technology from another monitor using a related panel.
Backlight
None (self-emissive)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026OLED is self-emissive.
None (self-emissive)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 20 expressly says own OLED pixels emit their own light without a backlight.
Local dimming
Not available
Not available
Dimming zones
Not available
Not available
Panel maker
LG Display9Reviewpcmonitors.info/lg/lg-ultragear-27gx704a-b-240hz-glossy-oled-modelRead 23 October 2026PCMonitors describes a 26.5 inch 2560 x 1440 glossy LG Display WOLED panel.
LG Display7Reviewpcgamer.com/hardware/gaming-monitors/lg-ultragear-evo-gx9-39gx950b-reviewRead 5 October 2026Exact review expressly distinguishes LG Display as panel maker from LG Electronics as monitor maker.
Panel part number
Not available
Not available
Panel generation
Not available
4th-generation Tandem OLED6Reviewrtings.com/monitor/reviews/lg/39gx950b-bRead 5 October 2026Own public 39-inch row, independently original producer Japanese feature. No fifth-generation or Alienware RGB-stripe panel facts inherited.
Subpixel layout
Not available
Not available
Colour depth
10bits2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Product Specification: 8-bit/10-bit colour is supported.
Not available
Colour depth method
Not available
Not available
Displayable colours
1.07 billion1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Color Depth (Number of Colors) 1.07B.
1.07 billion1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 1.07B. Native/FRC panel method and accepted per-mode input bit depth remain unproved.
sRGB coverage
Not available
Not available
DCI-P3 coverage
98.5%1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Color Gamut (Typ.) DCI-P3 98.5% (CIE1976). The minimum is 90.0% (CIE1976). The typical value is stored.
99.5%1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own DCI-P3 coverage 99.5%, CIE 1976. Not gamut volume or measured coverage.
Adobe RGB coverage
Not available
Not available
Rec. 2020 coverage
Not available
Not available
NTSC coverage
Not available
Not available
Factory calibrated
Yes1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Color Calibrated in Factory: YES.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Special features: Factory Calibrated Yes.
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own Factory Calibration Yes. U.S. paper report not proved and omitted.
Claimed Delta E
Not available
23Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own feature claims ΔE<=2, CIE DE2000 across all 125 Intertek colour-fidelity patterns. Stored upper bound, not measured average or exact equality. Picture preset and calibration procedure unstated.
Paper calibration report in box
Not available
Not available
Hardware calibration support
Yes1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature text: hardware calibration through the LG Calibration Studio. Spec table HW Calibration: Ready. The software and a calibration sensor are not in the box.
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own H/W Calibration True Color Pro Yes. Manual calibrated profiles use LG Calibration Studio.
Static contrast ratio
1,500,000:11Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Contrast Ratio (Typ.) 1500000:1, the minimum is 1200000:1. Footnote: 1.5m:1 is the contrast ratio at 25% average picture level.
1,850,000:11Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own static 1850000:1. No finite measured value invented for black OLED pixels.
Brightness (typical, SDR)
275nits1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Brightness (Typ.) 275 cd/m2. Feature text: standard luminosity of 275 nits.
335nits1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 335 cd/m² typical SDR. No full-screen mode claim inferred.
Brightness (maker minimum)
250nits1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Brightness (Min.) 250 cd/m2.
300nits1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 300 cd/m² maker minimum guarantee, not minimum adjustable luminance.
Peak brightness (HDR)
1,300nits1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature text: peak brightness of 1300 nits. No window size or mode is stated on the page.
1,500nits1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 1500 cd/m² HDR at 1.5% APL. Separate 600 cd/m² at 10% APL claim is not stored in a real-scene or full-screen field.
HDR peak test window
Not available
1.5%1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 1.5% average picture level. White-window stimulus is not assumed.
Full-screen brightness
Not available
Not available
HDR formats
HDR101Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table HDR 10: YES.
HDR101Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own HDR10 Yes. No other format inferred.
HDR certification
DisplayHDR True Black 4001Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table VESA DisplayHDR: DisplayHDR 400 TRUE BLACK. Footnote: True Black 400 is at 10% average picture level.
DisplayHDR True Black 5001Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own DisplayHDR True Black 500, not LCD DisplayHDR 500.
Viewing angle (horizontal)
178°1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Viewing Angle (CR 10 or more) 178 degrees right and left.
178°1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 178 degrees R/L.
Viewing angle (vertical)
178°1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Viewing Angle (CR 10 or more) 178 degrees up and down.
178°1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 178 degrees U/D.

Refresh rate and motion

11 of 22 differ
Refresh rate per resolution and port
ALG UltraGear 27GX704A
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 1.4
2560 × 1440Native240Hz240Hz
Source1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature text: 27GX704A is capable of up to 240 Hz from HDMI 2.1, so QHD and 240 Hz works over DisplayPort or HDMI. A graphics card with HDMI 2.1 and the included HDMI 2.1 cable are required. Bit depth and DSC use are not stated.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Product Specification: Max Resolution and Recommended Resolution 2560 x 1440 @ 240 Hz. The preset tables list 240.083 Hz for HDMI (Input Compatibility Version 2.1 PC) and for DisplayPort (1.4 and 1.4 with DSC).3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Key features: HDMI x 2, DisplayPort x 1, 240 Hz refresh rate, HDMI FRL as compliant with HDMI 2.1.
BLG UltraGear evo GX9 39GX950B
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 2.1 UHBR20USB-C
5120 × 2160Native165Hz165Hz165Hz
3840 × 2160165Hz165Hz165Hz
2560 × 1080330Hz330Hz330Hz
1920 × 1080330Hz330Hz330Hz
Source2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 17 explicitly limits Dual Mode Off (Full Wide) to native 5120 x 2160 at 165 Hz, Off (16:9) to 3840 x 2160 at 165 Hz, On (Full Wide) or On (21:9 34-inch) to 2560 x 1080 at 330 Hz, and On (16:9), On (16:9 27-inch) or On (16:9 24.5-inch) to 1920 x 1080 at 330 Hz. Own HDMI pages 22-23 and combined DisplayPort/USB-C pages 24-25 accept matching signals. The explicit ceilings and input support together establish maxima, rather than presets alone. HDMI native mode requires 2.1(PC). DP native mode supports 2.1 or 1.4 compatibility, with 2.1 DisplayPort only. USB-C needs compatible host/cable and optimized-resolution preference where necessary. Page 25 requires a DSC-capable GPU for preferred timing. Exact per-mode compression, depth and chroma are unstated and omitted.4Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202606_monitor_ultragear.pdfRead 5 October 2026Page 4 connector maximum-resolution table explicitly native 165 Hz for HDMI, DP and USB-C, plus WFHD 330 Hz for HDMI/DP. These original catalogue rows corroborate core hardware. Additional cropped 4K, FHD and USB-C WFHD modes come from explicit ceilings in own U.S. manual page 17 joined to matching input support on pages 22-25. The catalogue native USB-C row does not explicitly exclude lower-resolution Dual Mode. No per-mode bit depth, chroma or compression state inferred.
Max refresh rate
240Hz
330Hz
Max refresh rate at native resolution
240Hz
165Hz
Max refresh rate over DisplayPort
240Hz
165Hz
Max refresh rate over HDMI
240Hz
165Hz
Max refresh rate over USB-C
Not available
165Hz
Max refresh rate at 10-bit
Not available
Not available
Native refresh rate
240Hz1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Refresh Rate (Max.) 240 Hz. No overclock mode is described.
165Hz1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 165 Hz at native 5K2K. Faster 330 Hz needs lower-resolution Dual Mode.
Overclocked refresh rate
Not available
Not available
Dual mode
Not available
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own direct 5K2K 165 / WFHD 330 paired claim and dedicated manual button.
Minimum fixed refresh rate
Not available
Not available
Adaptive sync technologies
FreeSync Premium Pro, G-SYNC Compatible, VESA AdaptiveSync Display, Adaptive-Sync, HDMI VRR1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature text: NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro and VESA certified AdaptiveSync. The manual names Adaptive-Sync over DisplayPort and VRR over HDMI.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Game Adjust, Adaptive-Sync/VRR: Supported Interface DisplayPort (Adaptive-Sync), HDMI (VRR). A graphics card that supports G-SYNC or FreeSync is needed.
FreeSync Premium Pro, G-SYNC Compatible, VESA AdaptiveSync Display1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own FreeSync Premium Pro, G-SYNC Compatible and VESA Adaptive Sync. Original Japanese base-model feature explicitly VESA AdaptiveSync Display certification. No native G-SYNC module inferred.
VRR range per port
ALG UltraGear 27GX704A
Not available
BLG UltraGear evo GX9 39GX950B
InputMin (Hz)Max (Hz)
HDMI48165
DisplayPort48165
Source3Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own table explicitly separates native VRR 48-165 Hz and Dual Mode 48-330 Hz for HDMI/DP. Stored rows describe native Full Wide/Dual Mode off only. Schema cannot distinguish resolution modes. USB-C generic scan range does not prove its VRR interval.
Low framerate compensation
Not available
Yes13Maker product pageamd.com/en/products/graphics/technologies/freesync.htmlRead 5 October 2026Official AMD makes LFC mandatory for producer-confirmed FreeSync Premium Pro. No unproved input-specific interval inferred.
Response time (maker GtG claim)
0.03ms1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Spec table Response Time 0.03 ms (GTG).
0.03ms1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 0.03 ms GtG claim, not mean measured response. Exact setting for this claim is unstated.
Response time (maker MPRT claim)
Not available
Not available
Overdrive settings
Not available
Not available
Motion blur reduction
Not available
Not available
Blur-reduction technology
Not available
Not available
Blur reduction works with VRR
Not available
Not available
Flicker-free (claimed)
Yes1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Footnote: LG OLED panels are certified Flicker-Free by UL, certificate A196009.
Yes5Maker product pagelg.com/uk/monitors/ultragear-evo/39gx950b-bRead 5 October 2026Own Tandem OLED feature explicitly UL Flicker-Free Display A196009. VRR flicker is separate.
Black frame insertion
Not available
Not available

Measured

None of 12 known
Input lag at maximum refresh rate
Not available
Not available
Input lag at 60 Hz
Not available
Not available
Average response time (measured)
Not available
Not available
Overshoot (measured)
Not available
Not available
Contrast ratio (measured)
Not available
Not available
SDR brightness (measured)
Not available
Not available
HDR brightness in a real scene (measured)
Not available
Not available
PWM flicker frequency (measured)
Not available
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

12 of 19 differ
Video inputs
ALG UltraGear 27GX704A
TypeVersionCount
HDMI2.12
DisplayPort1.41
Source1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Connectivity: HDMI YES (2ea), DisplayPort YES (1ea), DP version 1.4. The HDMI 2.1 version comes from the accessory row (HDMI cable ver 2.1) and the US spec sheet.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Connection sections cover HDMI and DisplayPort. The Input Compatibility Version setting for HDMI offers 1.4 and 2.1.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026HDMI Yes x 2, HDMI Version: supports FRL as compliant with HDMI 2.1. DisplayPort Yes x 1, DP Version 1.4. Bandwidth in Gbps and HDCP are not stated.
BLG UltraGear evo GX9 39GX950B
TypeVersionCountMax bandwidth (Gbps)DSC
DisplayPort2.1 UHBR20180Yes
HDMI2.12Not availableNot available
USB-CNot available1Not availableYes
Source1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Own AllInfo DP 2.1 one, HDMI 2.1 two, USB-C one. Japanese original base-model table explicitly DP UHBR20 and public exact 39-inch review table 80 Gbps. Own manual separately proves DP/USB-C DSC capability. API alone does not establish compression. Port-specific HDCP, HDMI bandwidth and USB-C link revision are unproved and omitted.2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 25 combined DisplayPort/USB-C table requires a DSC-capable graphics card for preferred timing and frequency. This proves compression capability on those inputs. It does not identify compression operation, depth or chroma for each stored mode. HDMI compression capability remains unknown.6Reviewrtings.com/monitor/reviews/lg/39gx950b-bRead 5 October 2026Own 39-inch free differences table explicitly UHBR20/80 Gbps. Original producer Japanese base-model UHBR20 confirms. Other product rows and protected port measurements are excluded.
HDMI ports
2
2
DisplayPort ports
1
1
Highest HDMI version
2.1
2.1
Highest DisplayPort version
1.4
2.1 UHBR20
HDMI features
VRR2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Adaptive-Sync/VRR: HDMI (VRR).
VRR2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 17 supported interface explicitly HDMI VRR. Other HDMI feature names unproved.
USB-C video (DP Alt Mode)
No1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The connectivity list has HDMI, DisplayPort, a USB upstream port and USB downstream ports, and no USB-C port. PCGH also states there is no USB-C with DisplayPort Alt Mode.12Press articlepcgameshardware.de/Monitor-Display-Hardware-154105/News/Gaming-Monitor-LG-Ultragear-OLED-GX7-27GX704A-B-27-Zoll-WQHD-OLED-MLA-240-Hz-guenstig-kaufen-Amazon-Angebot-1536075Read 23 October 2026PCGH article of 2026-05-21 lists 1 DisplayPort 1.4 and 2 HDMI 2.1 and states there is no USB-C with DisplayPort Alt Mode.
Yes2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 13 explicitly supports PD and DisplayPort Alternate Mode through USB-C. The adapter powers the monitor itself.
USB-C power delivered
Not available
90W1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own 90 W supplied to compatible host. Monitor still needs separate DC adapter.
Thunderbolt
Not available
Not available
USB upstream ports
ALG UltraGear 27GX704A
ConnectorUSB versionCount
USB-B3.2 Gen 11
Source1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Connectivity: USB Upstream Port YES (1ea, ver 3.2 Gen1). The connector is type B, since the box has a USB A to B cable.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026USB Device connection: connect the A-B type USB 3.0 cable of the product to the PC.
BLG UltraGear evo GX9 39GX950B
ConnectorCount
USB-C1
Source1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own USB upstream via USB-C, one socket. Revision unstated in the own U.S. upstream row.
USB downstream hub ports
ALG UltraGear 27GX704A
ConnectorUSB versionCount
USB-A3.2 Gen 12
Source1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Connectivity: USB Downstream Port YES (2ea, ver 3.2 Gen1). RTINGS describes two USB-A ports.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026USB Device connection: the USB port on the product functions as a hub.8Reviewrtings.com/monitor/reviews/lg/27gx704a-bRead 23 October 2026RTINGS text: small USB hub with two USB-A ports.
BLG UltraGear evo GX9 39GX950B
ConnectorUSB versionCount
USB-A3.2 Gen 22
Source1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own two peripheral ports explicitly USB 3.2 Gen 2. Matching physical Type-A sockets. Manual data speed depends on USB-C preference and compatible host.
KVM switch
No8Reviewrtings.com/monitor/reviews/lg/27gx704a-bRead 23 October 2026RTINGS text says the monitor lacks a KVM switch, apart from a small USB hub with two USB-A ports. Read in Chrome. The measured result cells are for members only and are not used.
Not available
Daisy chain (MST)
Not available
Not available
Ethernet
Not available
No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own rear connector inventory has only HDMI, DP, USB-C, USB-A, headset and DC. No RJ45.
3.5 mm headphone output
Yes1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Connectivity: Headphone output 3-pole (Sound Only). The feature text calls it a 4-pole headphone out, so the pole count conflicts.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Headset Connection section.
Yes3Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own original base-model stereo-mini headset socket. Producer catalogue footnote 5 expressly 3.5 mm, four-pole sound+mic.
3.5 mm microphone input
Not available
Yes3Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Same shared four-pole 3.5 mm headset jack, not a separate microphone socket. Manual page 14 requires upstream USB connection to PC for microphone.
Optical out
Not available
No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own rear connector inventory has no optical audio socket.
Picture in picture
Not available
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own PIP Yes, manual input-pairing table.
Picture by picture
Not available
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own PBP Yes, supplementary maker specifies 2PBP.

Smart features

None of 4 known
Smart platform
Not available
Not available
Wi-Fi
Not available
Not available
Bluetooth
Not available
Not available
Remote control
Not available
Not available

Audio and camera

3 of 5 differ
Speakers
Not available
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Own exact U.S. AllInfo Speaker Yes. Exact TechRadar Design paragraph separately proves two physical internal speakers.
Number of speakers
Not available
28Reviewtechradar.com/computing/monitors/lg-ultragear-evo-39gx950b-b-reviewRead 5 October 2026Exact own-model Design paragraph explicitly states two internal 7 W speakers. This counts physical speakers, rather than inferring count from channels.
Speaker power per channel
Not available
7W3Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own original base-model built-in 7 W+7 W output. No physical driver count inferred.
Webcam
Not available
Not available
Microphone
Not available
Not available

Ergonomics and controls

7 of 15 differ
Stand height adjustment
130mm1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The UK dimensions with stand are 532.6 mm up and 402.6 mm down, a difference of 130 mm. The manual states 130 mm.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Adjusting the Stand Height: Max. 130.0 mm.
110mm2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 10 direct 110 mm maximum stand travel.
Tilt
Forward5°Backward21°1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Display Position Adjustments: Tilt, Height, Swivel and Pivot. The ranges are in the manual.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Adjusting the Angle: forward or backward from -5 to 21 degrees. Stored as 5 forward and 21 backward.
Forward8°Backward15°2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 11 direct -8/+15 degrees. Positive directional magnitudes stored.
Swivel
Left30°Right30°1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Display Position Adjustments lists Swivel. The range is in the manual.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Adjusting the Angle: 30 degrees to the left or to the right.
Left30°Right30°2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 11 direct 30 degrees left and right.
Pivot
Counterclockwise90°Clockwise0°1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Display Position Adjustments lists Pivot. The range is in the manual.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Pivot Feature: the monitor rotates 90 degrees counter-clockwise only.
Not available
Removable stand
Yes2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Wall mount instructions: remove the stand by performing the stand attachment in reverse.
Yes2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 8 explicitly removes stand before wall mount by reversing assembly.
VESA mount
100 x 1001Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Wall Mountable 100 x 100 mm.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Wall Mount 100 x 100 mm, M4 x L10 screws, 4 screws.
100 x 1002Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 7 exact 100 x 100 rear pattern.
VESA adapter needed
No2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026The wall mount plate is attached directly after the stand is removed. No VESA adapter is mentioned.
No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed pages 7-9 direct rear bracket attachment. Optional bracket is separate.
Security lock slot
Yes2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Using the Kensington Lock section. The lock itself is optional and sold separately.
Yes2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 6 own socket and locking cable procedure. Cable optional.
On-screen menu controls
Joystick, Software1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature text: On-Screen Display and OnScreen Control for settings and the User Defined Key. The manual describes the joystick button.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026The joystick button at the bottom of the monitor opens and controls the OSD menu. Supported software includes LG Switch and Dual Controller.
Joystick, Buttons, Software2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed pages 9-10 joystick and dedicated Dual Mode button. Printed page 16 personalized-picture software wizard and calibrated profiles alter display settings. Layout-only software is not counted.
Desktop software
LG Switch, LG Calibration Studio, Dual Controller2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Supported Software: Monitor Driver, LG Switch, LG Calibration Studio and Dual Controller.
LG Switch, LG Calibration Studio2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 11 named supported apps, with actual picture wizard and calibrated profiles on 16. Dual Controller data-sharing software is separate.
User firmware updates
Not available
Not available
Ambient light sensor
Not available
Not available
Presence sensor
Not available
Not available
RGB lighting
Not available
Yes1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own RGB LED Lighting row Unity Hexagon Lighting 2.0. Manual static/cycling colour controls corroborate.
Gaming menu features
Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Features list Black Stabiliser, Dynamic Action Sync, Crosshair and FPS Counter.
Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter, AI Upscaling, AI Scene Optimization, AI Sound1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own named four features. Crosshair/FPS counter are mutually exclusive per own manual.2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed pages 16-17 name AI Upscaling High/Low/Off, AI Scene Optimization and AI Sound under AI Boost. AI Scene Optimization is available only in Personalized Picture, Gamer 1, Gamer 2, FPS, RTS, Vivid or Max Brightness presets. AI Sound applies to internal speakers and connected headphones. Own April 7 release separately requires at least WFHD source for AI Upscaling. Existing Crosshair and FPS Counter are mutually exclusive.11Press releaselg.com/us/newsroom/media-entertainment/game-on-lg-kicks-off-pre-orders-for-ultragear-evo-gx9-and-gm9-gaming-monitorsRead 5 October 2026Exact 39GX950B-B April 7 release names AI Upscaling, AI Scene Optimization and AI Sound. Footnote 8 requires WFHD or higher source for AI Upscaling. Picture-preset and audio-output conditions come from own manual page 16.

OLED care

1 of 3 differ
OLED care
OLED Screen Move, OLED Screen Saver, OLED Image Cleaning1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The feature text names OLED Care. The manual lists the three functions.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Settings, General: OLED Screen Move, OLED Screen Saver and OLED Image Cleaning.
Screen Saver, Image Cleaning2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 19 exact two OLED Care controls. Image Cleaning runs approximately 10 minutes after more than 10 minutes use since last cleaning when entering standby/off. No older Screen Move or separate Pixel Cleaning menu inherited.
Burn-in covered by warranty
Not available
Not available
Burn-in warranty length
Not available
Not available

Dimensions and weight

6 of 7 differ
Dimensions with stand
Width605.2Height (lowest)402.6Height (highest)532.6Depth220mm(23.8 × 15.9 to 21 × 8.7 in)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Dimension with Stand (W x H x D) 605.2 x 532.6 x 220 mm (up) and 605.2 x 402.6 x 220 mm (down).2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026With stand 605.2 x 532.6 x 220.0 mm (W x H x D), the highest position.
Width921.4Height (lowest)495.4Height (highest)605.4Depth322.8mm(36.3 × 19.5 to 23.8 × 12.7 in)5Maker product pagelg.com/uk/monitors/ultragear-evo/39gx950b-bRead 5 October 2026Own exact UP/DOWN metric positions. Own U.S. manual page 21 corroborates upper position. No minimum height computed from travel.
Dimensions without stand
Width605.2Height351Depth45.3mm(23.8 × 13.8 × 1.8 in)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Dimension without Stand (W x H x D) 605.2 x 351.0 x 45.3 mm.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Without stand 605.2 x 351.0 x 45.3 mm.
Width921.4Height405Depth118.7mm(36.3 × 15.9 × 4.7 in)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 21 own direct metric body dimensions. Curved envelope, not flattened active panel span.
Stand footprint
Not available
Not available
Weight with stand
7.2kg(15.9 lb)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Weight with Stand 7.2 kg.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026With stand 7.2 kg without packaging.
10.7kg(23.6 lb)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 21 net 10.7 kg with stand, without packaging.
Weight without stand
4.8kg(10.6 lb)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Weight without Stand 4.8 kg.2Owner's manualgscs-b2c.lge.com/open/downloadFileRead 23 October 2026Without stand 4.8 kg without packaging.
6.8kg(15 lb)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 21 net 6.8 kg body, without stand or packaging.
Box dimensions
Width673Height168Depth529mm(26.5 × 6.6 × 20.8 in)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Dimension in Shipping (W x H x D) 673 x 168 x 529 mm.
Width1,035Height296Depth549mm(40.7 × 11.7 × 21.6 in)5Maker product pagelg.com/uk/monitors/ultragear-evo/39gx950b-bRead 5 October 2026Own maker shipping W x H x D metric. Original Japanese base-model table agrees. Flat-packed orientation retained.
Box weight
9.9kg(21.8 lb)1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Weight in Shipping 9.9 kg.
16.2kg(35.7 lb)5Maker product pagelg.com/uk/monitors/ultragear-evo/39gx950b-bRead 5 October 2026Own shipping 16.2 kg, above complete 10.7 kg product. Rounded U.S. 35.7 lb corroborates source rounding.

Power

8 of 13 differ
Power supply
External adapter1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Power Type External Power (Adapter).4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026Power supply type external.6Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 23 October 2026Power supply type external.
External adapter1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own external adapter.
Adapter rating
Not available
270W2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 21 two adapter options explicitly 20 V x 13.5 A output, exactly 270 W. Device input 20 V x 12 A, 240 W is separate and not maximum operating consumption.
Input voltage
100-240 V AC, 50/60 Hz1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Power AC Input 100 to 240 V (50/60 Hz). This is the adapter input.
100-240 V AC, 50/60 Hz1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own AC mains range. Not monitor 20 V DC or USB PD input.
Power use (typical)
Not available
54W4Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202606_monitor_ultragear.pdfRead 5 October 2026Page 4 core 39GX950B column On Mode 54 W. Footnote 8 defines 200 cd/m² one hour measurement video. Original Japanese base-model page also 54 W. EU 40.3 W default 60 Hz test and device 240 W DC input are separate.
Power use (max)
Not available
Not available
Power use SDR (EU label)
23.5W4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026On mode power demand in SDR 23.5 W.6Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 23 October 2026On mode power demand SDR 23.5 W.
40.3W9EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact model English PIS page 2 row 4 EU on-mode SDR, default 60 Hz.
Power use HDR (EU label)
22.5W4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026On mode power demand in HDR 22.5 W.6Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 23 October 2026On mode power demand HDR 22.5 W.
45.9W9EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact PIS page 2 row 6 EU HDR on-mode.
Standby power
0.5W1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Power Consumption (Sleep Mode) less than 0.5 W. The EPREL sheet states 0.5 W.4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026Standby mode power demand 0.5 W.
0.5W9EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact PIS page 2 row 8 standby demand. Not network standby.
Off-mode power
0.3W1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Power Consumption (DC Off) less than 0.3 W. The EPREL sheet states 0.3 W.4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026Off mode power demand 0.3 W.
0.3W9EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact PIS page 2 row 7 off demand. Maker less-than qualifier is separate.
EU energy class SDR
F1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The UK page links the EU energy label and the product information sheet, class F.5EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2408077.svgRead 23 October 2026EU label class F for SDR.6Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 23 October 2026Product information sheet dated 2025-11-20: SDR class F.
G9EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact PIS page 2 row 3.
EU energy class HDR
F1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026The product information sheet shows HDR class F.5EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2408077.svgRead 23 October 2026EU label class F for HDR.6Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 23 October 2026HDR class F.
G9EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact PIS page 2 row 5.
Energy per 1000 h SDR
24kWh5EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2408077.svgRead 23 October 2026EU label SDR value 24 kWh per 1000 h.
40kWh10EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact EU label integer 40 read directly, not calculated from decimal 40.3 W.
Energy per 1000 h HDR
23kWh5EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2408077.svgRead 23 October 2026EU label HDR value 23 kWh per 1000 h.
46kWh10EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact EU label integer 46 read directly. Not inherited from SDR.

Certifications

3 of 9 differ
VESA ClearMR
13,0003Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Special features: VESA ClearMR 13000.
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
Not available
Not available
Low blue light
Hardware1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Feature text: LG WOLED is certified by UL for low blue light, platinum. Certificate: Low Blue Light Hardware Solution Platinum V745051.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Special features: Live Color Low Blue Light Yes.
Hardware5Maker product pagelg.com/uk/monitors/ultragear-evo/39gx950b-bRead 5 October 2026Own feature explicitly UL Low Blue Light Hardware Solution Platinum V745051. Reader picture filter is separate.
ENERGY STAR
Not available
Not available
TCO Certified
Not available
Not available
EPEAT
Not available
Not available
Colour certifications
Not available
UL Perfect Color V569367, Intertek 100% Color Fidelity 24KRQ0950-02, UL Perfect Reproduction V7567603Maker product pagelg.com/jp/monitors/gaming-monitors/39gx950b-bRead 5 October 2026Own original base-model certificate names. Perfect Color uses 0/500 lux colour fidelity. Perfect Reproduction uses 95% pixel accuracy at 0-500 lux. These are panel claims, not proof of a paper factory report.
Other certifications
UL Flicker-Free Display A196009, UL Discomfort Glare Free V563481, UL Low Blue Light Hardware Solution Platinum V7450511Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Footnote with certificate numbers: Flicker-Free Display (OLED) A196009, Discomfort Glare Free V563481 (UGR below 22), Low Blue Light Hardware Solution Platinum V745051.
UL Flicker-Free Display A196009, UL Discomfort Glare Free V563481, UL Low Blue Light Hardware Solution Platinum V745051, Eyesafe 3.0 CPF60 V745354, Eyesafe 3.0 RPF40 V275741, UL Perfect Black OLED V1836325Maker product pagelg.com/uk/monitors/ultragear-evo/39gx950b-bRead 5 October 2026Own certificate footnote. Discomfort Glare condition UGR<22, Eyesafe CPF60/RPF40 explicitly named.11Press releaselg.com/us/newsroom/media-entertainment/game-on-lg-kicks-off-pre-orders-for-ultragear-evo-gx9-and-gm9-gaming-monitorsRead 5 October 2026Own 39GX950B-B OLED certificate footnote 5 expressly names UL Perfect Black OLED V183632. This is a black-performance certification, not a measured contrast ratio.

In the box

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In the box
Monitor, Power adapter, Power cord, DisplayPort cable, HDMI cable, USB-A to USB-B cable1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Accessory rows: HDMI (ver 2.1), Display Port, USB A to B. The manual says to use the power cord in the package, and it lists two AC/DC adaptor models.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Cabinet and accessories list the three cables.
Monitor, Stand, AC/DC adapter, Power cable, HDMI cable, DisplayPort cable, USB-C cable1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own U.S. HDMI, DP and USB-C cable rows, matching core stand/adapter manual assembly. No optional remote, regional paper report or unstated cable counts inferred.
Cables included
ALG UltraGear 27GX704A
Type
DisplayPort cable
HDMI cable
USB-A to USB-B cable
Source1Maker product pagelg.com/uk/monitors/gaming/27gx704a-bRead 23 October 2026Accessory rows: HDMI (ver 2.1), Display Port, USB A to B. Counts are not stated. The US spec sheet lists the same three cables.3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Cabinet and accessories: Display Port Cable Yes, HDMI Cable Yes (Ver 2.1), USB A to B Cable Yes.
BLG UltraGear evo GX9 39GX950B
Not available

Warranty

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Manufacturer warranty (source market)
2years3Maker spec sheet (PDF)static.pcrichard.com/docs/27GX704A-B_Specifications-Sheet_01.pdfRead 23 October 2026Limited Warranty 2-Year Parts and Labor, US. The EPREL sheet gives 1 year as the general guarantee in the EU.4EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2408077_EN.pdfRead 23 October 2026Minimum duration of the general guarantee offered by the supplier is 1 year in the EU.
2years1Maker product pagelg.com/us/monitors/lg-39gx950b-b-gaming-monitorRead 5 October 2026Exact U.S. 39GX950B-B AllInfo. Own U.S. 2-Year Parts and Labor. Optional two-year LG Premium Care extension in preorder offer is separate. Burn-in-specific coverage is not explicitly proved.
Dead pixel policy
Not available
Not available

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