Photo 1 of 5
LG UltraGear evo GX9 (39GX950B) · Photo source
LG · UltraGear
UltraGear evo GX9 (39GX950B)
LG's 2026 39-inch-class (38.86-inch) curved 5K2K (5120 x 2160) OLED gaming monitor, which runs at 165Hz, or at 330Hz in a 2560 x 1080 Dual Mode.
- Size
- 38.9″
- Resolution
- 5120 × 2160
- PPI
- 143
- Panel
- OLED
- Refresh
- 165 Hz
- Brightness
- 335 nits
- HDR
- True Black 500
- USB-C power
- 90 W
What reviewers say
Reviewers agree the 5K2K resolution makes it far sharper than earlier 39-inch ultrawides, and praise its immersive size, brighter Tandem OLED picture, deep blacks and responsive gaming; TFTCentral also liked the gentler curve. RTINGS found VRR flicker distracting, TFTCentral thought the refresh rate low for an OLED and the AI upscaling of limited use, and PC Gamer criticised the two-year warranty and high price.
From rtings.com, tftcentral.co.uk and pcgamer.com
Specifications
Report a wrong or missing specDisplay
- Screen size
- 38.9″
- Resolution
- 5120 × 2160 (5K2K)
- Sharpness
- 143 pixels per inch
- Panel
- OLED (4th-gen Primary RGB Tandem WOLED; Dual mode: 2560 x 1080 at 330 Hz)
- Refresh rate
- 165 Hz
- Response time (grey to grey)
- 0.03 ms
- Brightness (typical)
- 335 nits
- HDR peak brightness
- 1,500 nits
- HDR certification
- DisplayHDR True Black 500
- HDR formats
- HDR10
- Contrast ratio
- 1,850,000:1
- Colour range
- 99.5% DCI-P3
- DCI-P3 coverage
- 99.5%
- Screen finish
- Matte
- Shape
- Curved (1500R)
- Adaptive sync
- G-Sync Compatible, FreeSync Premium Pro
- Colour depth
- 1.07B colours
- Viewing angles
- 178° horizontal, 178° vertical (CR ≥ 10)
- Pixel pitch
- 0.1776 × 0.1776 mm
- Eye care
- Reader Mode, Color Weakness mode; panel UL-verified Flicker-Free and Discomfort Glare Free, Eyesafe 3.0
- Burn-in protection
- OLED Care, including an OLED Care screen saver
- Calibration
- Factory calibrated; hardware calibration ready (LG Calibration Studio)
Connections
- Video inputs
- 2 × HDMI 2.1, DisplayPort 2.1 UHBR20, USB-C
- USB-C charging
- Up to 90 W
- USB ports
- 2 × USB-A
- KVM switch
- No
- Ethernet
- No
- Speakers
- Yes
- USB-C detail
- Upstream; display input (DisplayPort Alt Mode), data and up to 90 W charging over one cable
- USB hub detail
- 2 × USB-A (USB 3.2 Gen 2), upstream via USB-C
- Picture by picture
- PBP (2 inputs), PIP
- Audio out
- 4-pole headphone out (sound + mic)
- Speaker detail
- 2 × 7 W, AI Sound
Design
- Stand adjusts
- Height, tilt, swivel
- VESA mount
- Yes
- Weight with stand
- 10.7 kg
- VESA pattern
- 100 × 100 mm
- Size with stand
- 921.4 × 605.4 × 322.8 mm (raised), 921.4 × 495.4 × 322.8 mm (lowered)
- Size without stand
- 921.4 × 405.0 × 118.7 mm
- Weight without stand
- 6.8 kg
- Colours
- Black
Power and support
- Power use
- Less than 0.5 W (sleep)
- Power supply
- External adapter, 100–240 V AC, 50/60 Hz
- Software
- LG Calibration Studio (True Color Pro), Dual Controller
- Certifications
- UL-verified Perfect Black, Perfect Colour and Perfect Reproduction
Pros and cons
Pros
- 5120 x 2160 on a 1500R curve (about 143 ppi) at 165Hz, or 330Hz at 2560 x 1080 in Dual Mode
- DisplayPort 2.1 (UHBR20), two HDMI 2.1 inputs and a USB-C input with DisplayPort Alt Mode and 90W charging
- VESA DisplayHDR True Black 500 and 0.03ms GtG response; LG quotes up to 1,500 nits peak
Cons
- 335-nit typical SDR brightness
- The stand adjusts for height, tilt and swivel but doesn't pivot
- LG says 330Hz Dual Mode needs a graphics card with DisplayPort 2.1
Closest rivals
Model | Size | Resolution | PPI | Panel | Refresh | Brightness | HDR | USB-C power | Released |
|---|---|---|---|---|---|---|---|---|---|
| 38.9″ | 5120 × 2160 | 143 | OLED | 165 Hz | 300 nits | True Black 500 | 90 W | Jun 2026 | |
| 39.7″ | 5120 × 2160 | 140 | IPS | 120 Hz | 450 nits | 600 | 140 W | Jan 2024 | |
| 37″ | 3840 × 2160 | 119 | VA | 165 Hz | 350 nits | 600 | – | Sept 2025 |
Sources
- lg.com/uk/monitors/gaming-monitor/39gx950b-b
- lg.com/us/monitors/lg-39gx950b-b-gaming-monitor
- lg.com/us/press-release/game-on-lg-kicks-off-pre-orders-for-ultragear-evo-gx9-a…
- lg.com/global/newsroom/news/media-entertainment-solution/lg-unveils-ultragear-e…
- trustedreviews.com/news/lg-announces-ultragear-pricing-and-availability-for-202…
- tftcentral.co.uk/reviews/lg-ultragear-evo-39gx950b
- tftcentral.co.uk/news/the-lg-39gx950b-appears-on-lg-com-with-more-information-a…
Photo: lg.com
- LG 39GX950B, Right side view: LG, official UK product gallery
- LG 39GX950B, Rear view: LG, official UK product gallery
- LG 39GX950B, LG 39GX950B-B UltraGear evo AI Curved Gaming Monitor with adjustable stand - Front View: LG, official US product gallery
- LG 39GX950B, LG 39GX950B-B UltraGear Monitor back panel with HDMI DisplayPort USB-C USB and audio ports: LG, official US product gallery
