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LG UltraGear evo GX9 (39GX950B) vs LG UltraGear OLED 45GX950A

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

LGUltraGear evo GX9 (39GX950B)LGUltraGear OLED 45GX950A
Overview
ReleasedJune 2026April 2025
Display
Screen size38.9″44.5″
Resolution5120 × 2160 (5K2K)5120 × 2160 (5K2K)
Sharpness143 pixels per inch125 pixels per inch
PanelOLED (4th-gen Primary RGB Tandem WOLED; Dual mode: 2560 x 1080 at 330 Hz)OLED (LG Display WOLED with RGWB subpixels; dual mode 2560 × 1080 at 330 Hz (TFTCentral, from LG))
Refresh rate165 Hz165 Hz
Response time (grey to grey)0.03 ms0.03 ms
Brightness (typical)335 nits275 nits
HDR peak brightness1,500 nits–
HDR certificationDisplayHDR True Black 500DisplayHDR True Black 400
HDR formatsHDR10HDR10
Contrast ratio1,850,000:11,500,000:1
Colour range99.5% DCI-P398.5% DCI-P3 (typical)
DCI-P3 coverage99.5%98.5%
Screen finishMatte–
ShapeCurved (1500R)Curved (800R)
Adaptive syncG-Sync Compatible, FreeSync Premium ProFreeSync Premium Pro, G-Sync Compatible
Subpixel layout–RGWB (TFTCentral)
Colour depth1.07B colours10-bit, 1.07 billion colours
Colour modes–Reader Mode, Colour Weakness mode; HDR Effect
HDR detail–HDR10; VESA DisplayHDR True Black 400
Viewing angles178° horizontal, 178° vertical (CR ≥ 10)178° / 178°
Pixel pitch0.1776 × 0.1776 mm0.2035 × 0.2035 mm
Eye careReader Mode, Color Weakness mode; panel UL-verified Flicker-Free and Discomfort Glare Free, Eyesafe 3.0–
Burn-in protectionOLED Care, including an OLED Care screen saver–
CalibrationFactory calibrated; hardware calibration ready (LG Calibration Studio)Factory calibrated; hardware calibration ready (LG Calibration Studio)
Connections
Video inputs2 × HDMI 2.1, DisplayPort 2.1 UHBR20, USB-C2 × HDMI 2.1, DisplayPort 2.1, USB-C
USB-C chargingUp to 90 WUp to 90 W
USB ports2 × USB-A2 × USB-A
KVM switchNo–
EthernetNo–
SpeakersYesYes
HDMI detail–2 × HDMI 2.1 (1.8 m cable included)
DisplayPort detail–DisplayPort 2.1 with DSC (cable included)
USB-C detailUpstream; display input (DisplayPort Alt Mode), data and up to 90 W charging over one cableUSB-C with video up to 5120 × 2160 at 165 Hz, data and 90 W power delivery; also the USB upstream port
USB hub detail2 × USB-A (USB 3.2 Gen 2), upstream via USB-C2 × USB 3.0 downstream
Picture by picturePBP (2 inputs), PIPPIP; 2-way PBP
Audio out4-pole headphone out (sound + mic)4-pole headphone out (sound and mic), DTS Headphone:X
Speaker detail2 × 7 W, AI Sound2 × 10 W, Rich Bass
Design
Stand adjustsHeight, tilt, swivelHeight, tilt, swivel
VESA mountYesYes
Weight with stand10.7 kg14 kg
VESA pattern100 × 100 mm100 × 100 mm
Size with stand921.4 × 605.4 × 322.8 mm (raised), 921.4 × 495.4 × 322.8 mm (lowered)991.6 × 342 × 545.6–665.6 mm (W × D × H)
Size without stand921.4 × 405.0 × 118.7 mm991.6 × 225.5 × 460.7 mm (W × D × H)
Weight without stand6.8 kg9.4 kg
Controls–4-way joystick; user-defined key; auto input switch; dual controller; Unity Hexagon Lighting
ColoursBlack–
Power and support
Power useLess than 0.5 W (sleep)Less than 0.5 W sleep, less than 0.3 W off
Power supplyExternal adapter, 100–240 V AC, 50/60 HzExternal adapter, 20 V / 18 A output, 100–240 V input
In the box–HDMI 2.1 cable, DisplayPort 2.1 cable, USB-C cable, power adapter and cord, mouse holder
SoftwareLG Calibration Studio (True Color Pro), Dual Controller–
CertificationsUL-verified Perfect Black, Perfect Colour and Perfect Reproduction–

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