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LG UltraGear 34GX90SA vs LG UltraGear 39GX90SA

Product A: LG

UltraGear 34GX90SA

103 of 172 known
Change LG UltraGear 34GX90SA

Compare the LG UltraGear 39GX90SA with

Product B: LG

UltraGear 39GX90SA

86 of 172 known
Change LG UltraGear 39GX90SA

Compare the LG UltraGear 34GX90SA with

34 of 164 fields differ

Download CSVDownload JSON
  • 15 different values
  • 19 known for one only
  • 65 the same
  • 65 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Power use SDR (EU label)Lower is betterA: 32.3WB: 40.3WUltraGear 34GX90SA is 8 W lower.
  2. Power use HDR (EU label)Lower is betterA: 38.9WB: 45.9WUltraGear 34GX90SA is 7 W lower.
  3. Pixel densityA: 109.7ppiB: 95.6ppiUltraGear 34GX90SA is 14.1 ppi higher.

Refresh rate per resolution

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

3440 × 1440Native for both
A240Hz
B240Hz

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
A10.4kg
B11.45kg
Weight without stand
A6.2kg
B7.3kg
Box weight
A15.5kg
B17.5kg

All 172 fields

Every value links to where we found it.

ALG UltraGear 34GX90SA
BLG UltraGear 39GX90SA

General

1 of 8 differ
Series
UltraGear OLED1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W product title and gaming category.
UltraGear OLED1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W product title and gaming category.
Model numbers
34GX90SA-W1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W sold model number. Other regions are not represented as variants.
39GX90SA-W1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W sold model number. Other regions are not represented as variants.
GTIN / EAN
1951741158001Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Warranty UPC. European GTINs are not assigned to the U.S. reference.
1951741153291Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Warranty UPC. European GTINs are not assigned to the U.S. reference.
Announced
Not available
Not available
Status
Not available
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
$1,3992Press releaselg.com/us/press-release/lg-ug-smart-monitor-pr-4-02-2025.pdfRead 5 October 2026Page 1 explicitly names this model and initial U.S. retail price. The publisher states a whole-dollar amount. Later .99 MSRP and sale prices are not substituted.
$1,5992Press releaselg.com/us/press-release/lg-ug-smart-monitor-pr-4-02-2025.pdfRead 5 October 2026Page 1 explicitly names this model and initial U.S. retail price. The publisher states a whole-dollar amount. Later .99 MSRP and sale prices are not substituted.
Launch price (EU)
Not available
Not available
Markets
Not available
Not available
Colours
Not available
Not available
Segment
Gaming1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W gaming monitor category.
Gaming1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W gaming monitor category.

Display

4 of 12 differ
Screen size
34in(86.4 cm)1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Screen Size. The 45-inch class uses the published 44.5-inch panel.
39in(99.1 cm)1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Screen Size: 39 inches.
Viewable screen diagonal
Not available
Not available
Native resolution
3440 × 1440px1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Native Resolution. This smart model is WQHD, not the 5K2K GX950A.
3440 × 1440px1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Native Resolution. This smart model is WQHD, not the 5K2K GX950A.
Aspect ratio
21:91Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W maker nominal 21:9 class. The exact 3440:1440 pixel fraction differs from the nominal class.
21:91Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W maker nominal 21:9 class. The exact 3440:1440 pixel fraction differs from the nominal class.
Pixel density
109.7ppi
95.6ppi
Pixel pitch
0.231mm1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo equal horizontal and vertical pixel pitch in mm. Published precision is retained.
0.266mm4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact maker table 0.266 x 0.266 mm, independently matching the French LG sheet. U.S. 0.303 mm is copied from the larger 45-inch panel and is inconsistent with the exact 39-inch diagonal.
Active display area
Width795Height333mm(31.3 × 13.1 in)5Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026Exact column active panel area. Curved panel surface width can exceed external body width. Whole-mm source precision is retained.
Not available
Curved
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Curved Screen Yes.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Curved Screen Yes.
Curvature radius
800mm1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Curvature 800R. Fixed curvature, not a bendable panel.
800mm1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Curvature 800R. Fixed curvature, not a bendable panel.
Screen surface
Not available
Not available
Anti-reflection coating
Anti-Glare, Low-Reflection of the front polarizer1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Surface Treatment. This alone does not establish a matte or glossy classification.
Anti-Glare, Low-Reflection of the front polarizer1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Surface Treatment. This alone does not establish a matte or glossy classification.
Touchscreen
Not available
Not available

Panel

5 of 31 differ
Panel type
WOLED4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact-model feature body explicitly names LG WOLED.
WOLED6Reviewpcworld.com/article/2816556/lg-ultragear-39gx90sa-w-review.htmlRead 5 October 2026Exact-model specification and SDR image-quality sections explicitly identify WOLED. No other size measurement is inherited.
Panel type (as published)
WOLED4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact maker technology name.
WOLED6Reviewpcworld.com/article/2816556/lg-ultragear-39gx90sa-w-review.htmlRead 5 October 2026Exact panel technology name.
Backlight
None (self-emissive)4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026The producer WOLED description identifies a self-emissive OLED, not an LCD backlight.
Not available
Local dimming
Not available
Not available
Dimming zones
Not available
Not available
Panel maker
Not available
Not available
Panel part number
Not available
Not available
Panel generation
Not available
Not available
Subpixel layout
Not available
Not available
Colour depth
Not available
10bits4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact maker table Colour Bit 10bit. Native versus FRC implementation is unstated and omitted.
Colour depth method
Not available
Not available
Displayable colours
1.07 billion1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo number of colours 1.07B. Native colour depth method is unstated.
1.07 billion1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo number of colours 1.07B. Native colour depth method is unstated.
sRGB coverage
Not available
Not available
DCI-P3 coverage
98.5%1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo DCI-P3 98.5% typical, CIE 1976. Not measured coverage or gamut volume.
98.5%1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo DCI-P3 98.5% typical, CIE 1976. Not measured coverage or gamut volume.
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/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Factory Calibration Yes. A U.S. paper report is not independently established.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Factory Calibration Yes. A U.S. paper report is not independently established.
Claimed Delta E
24Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact model feature body claims Delta E <= 2 colour accuracy. Stored value is an upper bound, not exact measured error. Formula, reference colour space and test picture mode are unstated.
Not available
Paper calibration report in box
Not available
Not available
Hardware calibration support
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table HW Calibration No. Calibration Studio is also No. Factory calibration is a separate claim. The U.S. 45-inch True Color Pro feature is inconsistent and not adopted.
Not available
Static contrast ratio
1,500,000:11Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo typical 1.5M:1. The feature explanation uses 25% APL. Infinite reviewer contrast has no finite numeric representation.
1,500,000:11Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo typical 1.5M:1. The feature explanation uses 25% APL. Infinite reviewer contrast has no finite numeric representation.
Brightness (typical, SDR)
275nits1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo typical SDR 275 cd/m². Measured or minimum brightness is separate.
275nits1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo typical SDR 275 cd/m². Measured or minimum brightness is separate.
Brightness (maker minimum)
250nits1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo minimum guaranteed 250 cd/m². This is not the minimum adjustable brightness.
250nits1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo minimum guaranteed 250 cd/m². This is not the minimum adjustable brightness.
Peak brightness (HDR)
1,300nits1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo HDR peak 1300 cd/m² at 1.5% average picture level. Not a full-screen or sustained measurement.
1,300nits1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo HDR peak 1300 cd/m² at 1.5% average picture level. Not a full-screen or sustained measurement.
HDR peak test window
1.5%1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo explicitly uses 1.5% APL, not necessarily a white-window percentage.
1.5%1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo explicitly uses 1.5% APL, not necessarily a white-window percentage.
Full-screen brightness
275nits4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact feature body states standard luminance 275 nits at 100% APL, separate from peak 1300 nits at 1.5% APL.
Not available
HDR formats
HDR101Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo HDR10 Yes. HDR Effect does not establish another accepted HDR format.
HDR101Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo HDR10 Yes. HDR Effect does not establish another accepted HDR format.
HDR certification
DisplayHDR True Black 4001Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo DisplayHDR True Black 400. Not the LCD DisplayHDR 400 tier.
DisplayHDR True Black 4001Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo DisplayHDR True Black 400. Not the LCD DisplayHDR 400 tier.
Viewing angle (horizontal)
178°1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo viewing angle R/L at CR >= 10.
178°1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo viewing angle R/L at CR >= 10.
Viewing angle (vertical)
178°1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo viewing angle U/D at CR >= 10.
178°1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo viewing angle U/D at CR >= 10.

Refresh rate and motion

3 of 22 differ
Refresh rate per resolution and port
ALG UltraGear 34GX90SA
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 1.4USB-C
3440 × 1440Native240Hz240HzDSC240HzDSC
Source5Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026Exact connector maximum-resolution table explicitly gives native 3440 x 1440 at 240 Hz separately for HDMI, DisplayPort and USB-C. Manual pages 19-20 require HDMI 2.1 PC mode and DP/USB-C compatibility 1.4 DSC for preferred native 240 Hz. Bit depth, chroma and HDMI compression are unproved and omitted. Lower-resolution preset rows do not establish maxima.
BLG UltraGear 39GX90SA
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 1.4USB-C
3440 × 1440Native240Hz240HzDSC240HzDSC
Source2Press releaselg.com/us/press-release/lg-ug-smart-monitor-pr-4-02-2025.pdfRead 5 October 2026Page 2 exact GX9s table lists native 3440 x 1440, maximum 240 Hz and the model names. Footnote 1 expressly requires DisplayPort 1.4 or HDMI 2.1 for up to 240 Hz. Combined text confirms the native maximum for both input families. Manual page 20 requires DP compatibility 1.4 DSC. HDMI requires 2.1 PC mode. Bit depth, chroma and HDMI compression are unstated. Lower-resolution preset rows are not treated as maxima.4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact USB-C Max Resolution at Hz row explicitly states 3440 x 1440 at 240 Hz. Manual page 20 requires compatibility 1.4 DSC. Other port maxima are separately supported by the maker U.S. press sheet, not inferred from preset timing rows.
Max refresh rate
240Hz
240Hz
Max refresh rate at native resolution
240Hz
240Hz
Max refresh rate over DisplayPort
240Hz
240Hz
Max refresh rate over HDMI
240Hz
240Hz
Max refresh rate over USB-C
240Hz
240Hz
Max refresh rate at 10-bit
Not available
Not available
Native refresh rate
240Hz1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo native 240 Hz. No faster dual mode or overclock is inherited.
240Hz1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo native 240 Hz. No faster dual mode or overclock is inherited.
Overclocked refresh rate
Not available
Not available
Dual mode
Not available
Not available
Minimum fixed refresh rate
Not available
Not available
Adaptive sync technologies
FreeSync Premium, G-SYNC Compatible, VESA AdaptiveSync Display1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo names FreeSync Premium, G-SYNC Compatible and VESA Adaptive Sync. No native G-SYNC module or FreeSync Premium Pro is inferred.
FreeSync Premium, G-SYNC Compatible, VESA AdaptiveSync Display1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo names FreeSync Premium, G-SYNC Compatible and VESA Adaptive Sync. No native G-SYNC module or FreeSync Premium Pro is inferred.
VRR range per port
Not available
Not available
Low framerate compensation
Yes9Maker product pageamd.com/en/products/graphics/technologies/freesync.htmlRead 5 October 2026AMD officially requires LFC for FreeSync Premium-certified displays. The exact U.S. monitor has that named certification. No port-specific VRR interval is inferred.
Yes9Maker product pageamd.com/en/products/graphics/technologies/freesync.htmlRead 5 October 2026AMD officially requires LFC for FreeSync Premium-certified displays. The exact U.S. monitor has that named certification. No port-specific VRR interval is inferred.
Response time (maker GtG claim)
0.03ms1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo 0.03 ms GtG at Faster. Not a mean measured transition time.
0.03ms1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo 0.03 ms GtG at Faster. Not a mean measured transition time.
Response time (maker MPRT claim)
Not available
Not available
Overdrive settings
Not available
Not available
Motion blur reduction
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table Motion Blur Reduction Tech No. Fast OLED transitions do not themselves establish strobing.
Not available
Blur-reduction technology
Not available
Not available
Blur reduction works with VRR
Not available
Not available
Flicker-free (claimed)
Yes4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact-model feature body names UL Flicker-Free Display certification A196009. Flicker Safe menu No is distinct from panel certification and VRR flicker.
Not available
Black frame insertion
Not available
Not available

Measured

2 of 12 differ
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)
147nits8Measurementbenchmark.pl/lg-ultragear-34gx90sa-recenzja-test-opinia-7268521805853761aRead 5 October 2026Own SDR/HDR table for Game Optimizer, brightness setting 100%, 100% synthetic white window. Default 10% setting is 140 nits and not substituted. Firmware and connection are unstated. Other picture modes and maker 275-nit claim are different conditions.
246nits6Reviewpcworld.com/article/2816556/lg-ultragear-39gx90sa-w-review.htmlRead 5 October 2026SDR image-quality section reports approximately 246 nits sustained white luminance. Picture preset, window size, connection and firmware for this specific brightness result are not identified. The number retains the approximate qualifier. HDR 783.5 nits is not a real-scene result and is omitted.
HDR brightness in a real scene (measured)
354nits8Measurementbenchmark.pl/lg-ultragear-34gx90sa-recenzja-test-opinia-7268521805853761aRead 5 October 2026Same own Game Optimizer measurement table, actual film scene with less than 1% lit area, HDR. Scene title, firmware, connection and peak-brightness option are unstated. Synthetic HDR 1% window is 365 nits and is separate. Reviewer never reached the maker 1300-nit claim in tested conditions.
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

4 of 19 differ
Video inputs
ALG UltraGear 34GX90SA
TypeVersionCountDSCHDCP
HDMI2.12Not availableNot available
DisplayPort1.41Yes2.3
USB-CNot available1Not availableNot available
Source1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact AllInfo counts and input versions. Supplementary producer table explicitly DP 1.4 DSC, and AllInfo DP HDCP 2.3. USB-C is a video input via explicit manual Alt Mode. Link bandwidth, HDMI HDCP/DSC and USB-C link revision are unstated.
BLG UltraGear 39GX90SA
TypeVersionCountDSCHDCP
HDMI2.12Not availableNot available
DisplayPort1.41Yes2.3
USB-CNot available1Not availableNot available
Source1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact AllInfo counts and input versions. Supplementary producer table explicitly DP 1.4 DSC, and AllInfo DP HDCP 2.3. USB-C is a video input via explicit manual Alt Mode. Link bandwidth, HDMI HDCP/DSC and USB-C link revision are unstated.
HDMI ports
2
2
DisplayPort ports
1
1
Highest HDMI version
2.1
2.1
Highest DisplayPort version
1.4
1.4
HDMI features
Not available
Not available
USB-C video (DP Alt Mode)
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 14 explicitly supports PD and DisplayPort Alternate Mode at the upstream USB-C port.
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 14 explicitly supports PD and DisplayPort Alternate Mode at the upstream USB-C port.
USB-C power delivered
65W1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo USB-C Power Delivery 65 W supplied to a compatible host. The monitor still needs its separate adapter.
65W1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo USB-C Power Delivery 65 W supplied to a compatible host. The monitor still needs its separate adapter.
Thunderbolt
Not available
Not available
USB upstream ports
ALG UltraGear 34GX90SA
ConnectorCount
USB-C1
Source1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo one host-facing USB-C connection. Its USB data revision is unstated in the U.S. table.
BLG UltraGear 39GX90SA
ConnectorCount
USB-C1
Source1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo one host-facing USB-C connection. Its USB data revision is unstated in the U.S. table.
USB downstream hub ports
ALG UltraGear 34GX90SA
ConnectorUSB versionCount
USB-A2.02
Source1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo two USB 2.0 downstream ports. Their Type-A connector form is confirmed by the matching product and connector inventory.
BLG UltraGear 39GX90SA
ConnectorUSB versionCount
USB-A2.02
Source1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo two USB 2.0 downstream ports. Their Type-A connector form is confirmed by the matching product and connector inventory.
KVM switch
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table Built-in KVM No. One USB-C upstream may switch peripherals between the smart platform and its host, but this does not establish a two-host hardware KVM.
Not available
Daisy chain (MST)
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table Daisy Chain No.
Not available
Ethernet
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo LAN Yes. Data bandwidth is not inferred.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo LAN Yes. Data bandwidth is not inferred.
3.5 mm headphone output
Yes4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table three-pole headphone output, sound only. No microphone contacts.
Yes4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact table three-pole headphone output, sound only. No microphone contacts.
3.5 mm microphone input
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table Mic In No and three-pole sound-only output.
Not available
Optical out
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table SPDIF Optical Digital Audio Out No.
Not available
Picture in picture
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo PIP Yes. Not a KVM function.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo PIP Yes. Not a KVM function.
Picture by picture
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo PBP Yes. The supplementary exact-model table specifies two sources.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo PBP Yes. The supplementary exact-model table specifies two sources.

Smart features

0 of 4 differ
Smart platform
webOS 241Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo explicitly webOS 24. Present services vary by region and subscription.
webOS 241Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo explicitly webOS 24. Present services vary by region and subscription.
Wi-Fi
Wi-Fi 53Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 17 wireless module LGSBWAC23 supports IEEE 802.11a/b/g/n/ac. Wi-Fi 6 in a review is inconsistent with this exact hardware table and is not stored.
Wi-Fi 53Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 17 wireless module LGSBWAC23 supports IEEE 802.11a/b/g/n/ac. Wi-Fi 6 in a review is inconsistent with this exact hardware table and is not stored.
Bluetooth
Not available
Not available
Remote control
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo accessory Remote Control Yes. The optional Magic Remote for voice recognition is separate.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo accessory Remote Control Yes. The optional Magic Remote for voice recognition is separate.

Audio and camera

2 of 5 differ
Speakers
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo Speaker Yes. Output-channel count does not prove a physical driver count.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo Speaker Yes. Output-channel count does not prove a physical driver count.
Number of speakers
Not available
Not available
Speaker power per channel
7W4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table 7 W x 2 output channels. No physical driver count is inferred.
7W4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact table 7 W x 2 output channels. No physical driver count is inferred.
Webcam
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table Camera No. The optional external camera is not an installed camera.
Not available
Microphone
No4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact table Mic No. Optional Magic Remote voice recognition does not establish a monitor microphone.
Not available

Ergonomics and controls

1 of 15 differ
Stand height adjustment
110mm1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo stand travel. Independently confirmed by manual page 8.
110mm1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo stand travel. Independently confirmed by manual page 8.
Tilt
Forward8°Backward15°1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo stand angle and manual page 8. Stored as positive directional magnitudes.
Forward8°Backward15°1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo stand angle and manual page 8. Stored as positive directional magnitudes.
Swivel
Left30°Right30°1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo stand angle and manual page 8. Left and right are positive magnitudes.
Left30°Right30°1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo stand angle and manual page 8. Left and right are positive magnitudes.
Pivot
Not available
Not available
Removable stand
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 11 explicitly removes the supplied stand before wall mounting by reversing its attachment.
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 11 explicitly removes the supplied stand before wall mounting by reversing its attachment.
VESA mount
100 x 1001Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo mounting size, independently confirmed by manual page 10.
100 x 1001Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo mounting size, independently confirmed by manual page 10.
VESA adapter needed
No3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Pages 10-11 show the wall bracket attaching directly to the rear mounting holes. The optional wall bracket is separate.
No3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Pages 10-11 show the wall bracket attaching directly to the rear mounting holes. The optional wall bracket is separate.
Security lock slot
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 9 explains the physical Kensington socket. Its cable is optional.
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 9 explains the physical Kensington socket. Its cable is optional.
On-screen menu controls
Joystick, Remote3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own manual pages 15-16 describe joystick menu control and the included remote Settings and directional menu controls. The optional voice Magic Remote is separate.
Not available
Desktop software
Not available
Not available
User firmware updates
Not available
Not available
Ambient light sensor
Not available
Not available
Presence sensor
Not available
Not available
RGB lighting
Yes1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo explicitly RGB Hexagon Lighting. Not the power indicator.
Yes1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo explicitly RGB Hexagon Lighting. Not the power indicator.
Gaming menu features
Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo named gaming functions. No AI feature from another generation is imported.
Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo named gaming functions. No AI feature from another generation is imported.

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

6 of 7 differ
Dimensions with stand
Width784.1Height (lowest)470.4Height (highest)580.4Depth291.8mm(30.9 × 18.5 to 22.9 × 11.5 in)4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact UP and DOWN stand positions. Maximum independently agrees with manual page 18. No minimum height is calculated from travel.
Not available
Dimensions without stand
Width784.1Height358.3Depth167.1mm(30.9 × 14.1 × 6.6 in)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 exact metric body dimensions. W x D x H source axes are correctly mapped. Rounded inch values are not converted back to fabricated precision.
Width887.8Height404.4Depth198mm(35 × 15.9 × 7.8 in)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 exact metric body dimensions. W x D x H source axes are correctly mapped. Rounded inch values are not converted back to fabricated precision.
Stand footprint
Not available
Not available
Weight with stand
10.4kg(22.9 lb)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 own model row, without packaging. US imperial rounding differs in places, so the direct metric value takes precedence.
11.45kg(25.2 lb)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 own model row, without packaging. US imperial rounding differs in places, so the direct metric value takes precedence.
Weight without stand
6.2kg(13.7 lb)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 own model row without stand or packaging.
7.3kg(16.1 lb)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 own model row without stand or packaging. The older French 39-inch sheet says 7.80 kg, but its own model manual and current maker say 7.30 kg.
Box dimensions
Width927Height295Depth550mm(36.5 × 11.6 × 21.7 in)4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact shipping W x H x D. Flat-packed box orientation is retained.
Width985Height338Depth550mm(38.8 × 13.3 × 21.7 in)4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact shipping W x H x D. The French LG sheet independently agrees.
Box weight
15.5kg(34.2 lb)4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact shipping weight including packaging. This exceeds product weight.
17.5kg(38.6 lb)4Maker product pagelg.com/es/monitores/monitores-ultragear-gaming/39gx90sa-wRead 5 October 2026Exact maker shipping weight and French LG sheet agree. This includes packaging.

Power

4 of 13 differ
Power supply
External adapter1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo external adapter.
External adapter1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo external adapter.
Adapter rating
270W3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 adapter AD10660LF rated output is 20 V x 13.5 A, exactly 270 W. The 34-inch device input is separately 20 V x 11.5 A, 230 W.
270W3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Page 18 adapter AD10660LF rated output is 20 V x 13.5 A, exactly 270 W. This is adapter capacity, not monitor operating consumption.
Input voltage
100-240 V AC, 50/60 Hz1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo mains input, confirmed by manual page 18 adapter input. Not the monitor 20 V DC input.
100-240 V AC, 50/60 Hz1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo mains input, confirmed by manual page 18 adapter input. Not the monitor 20 V DC input.
Power use (typical)
Not available
Not available
Power use (max)
Not available
Not available
Power use SDR (EU label)
32.3W6EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 4 EU on-mode SDR power, at default 60 Hz. Not maker typical operating consumption.
40.3W7EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 4 EU on-mode SDR power, at default 60 Hz. Not maker typical operating consumption.
Power use HDR (EU label)
38.9W6EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 6 EU on-mode HDR power. Not a peak power rating.
45.9W7EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 6 EU on-mode HDR power. Not a peak power rating.
Standby power
0.5W6EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 8 standby demand. Off mode is n.a. and not inferred as zero.
0.5W7EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 8 standby demand. Off mode is n.a. and not inferred as zero.
Off-mode power
Not available
Not available
EU energy class SDR
G6EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 3.
G7EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 3.
EU energy class HDR
G6EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 5.
G7EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact-model English page 2 row 5.
Energy per 1000 h SDR
32kWh7EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact EU label explicitly prints this integer. Not calculated from the decimal fiche wattage.
40kWh8EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact EU label explicitly prints this integer. Not calculated from the decimal fiche wattage.
Energy per 1000 h HDR
39kWh7EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact EU label explicitly prints this HDR integer. Independently read, not inherited from SDR.
46kWh8EU energy label (EPREL)lg.com/es/lgecs.downloadFile.ldwfRead 5 October 2026Exact EU label explicitly prints this HDR integer. Independently read, not inherited from SDR.

Certifications

2 of 9 differ
VESA ClearMR
Not available
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
Not available
Not available
Low blue light
Hardware4Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact-model feature body names UL Low Blue Light Hardware Solution Platinum V745051. A Reader filter is a separate software setting.
Not available
ENERGY STAR
Not available
Not available
TCO Certified
Not available
Not available
EPEAT
Not available
Not available
Colour certifications
Not available
Not available
Other certifications
UL Flicker-Free Display A196009, UL Discomfort Glare Free V563481, UL Low Blue Light Hardware Solution Platinum V7450514Maker product pagelg.com/uk/monitors/gaming/34gx90sa-wRead 5 October 2026Exact feature certificate footnote. Discomfort Glare Free V563481 uses UGR < 22.
Not available

In the box

0 of 2 differ
In the box
Monitor, Stand, AC/DC adapter, HDMI cable, DisplayPort cable, USB-C cable, Remote control1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo cables and included remote, with the monitor, stand and external adapter in the manual. Optional Magic Remote, regional paper report and unstated cable lengths are omitted.
Monitor, Stand, AC/DC adapter, HDMI cable, DisplayPort cable, USB-C cable, Remote control1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo cables and included remote, with the monitor, stand and external adapter in the manual. Optional Magic Remote, regional paper report and unstated cable lengths are omitted.
Cables included
Not available
Not available

Warranty

0 of 2 differ
Manufacturer warranty (source market)
2years1Maker product pagelg.com/us/monitors/lg-34gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 34GX90SA-W AllInfo two-year parts and labor warranty and exact U.S. support. EU one-year regulatory guarantee metadata does not replace U.S. terms. Burn-in-specific coverage is not established.
2years1Maker product pagelg.com/us/monitors/lg-39gx90sa-w-gaming-monitorRead 5 October 2026Exact U.S. 39GX90SA-W AllInfo two-year parts and labor warranty and exact U.S. support. EU one-year regulatory guarantee metadata does not replace U.S. terms. Burn-in-specific coverage is not established.
Dead pixel policy
Not available
Not available

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