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27 inch black frameless OLED gaming monitor on adjustable stand with RGB lighting

LG Electronics

LG Electronics 27GX790A-B 27" 480Hz OLED QHD gaming monitor

SKU CH-TYV0-VY5DB MPN 27GX790A-B

A 27-inch OLED gaming monitor delivering 480Hz refresh rate, 0.03ms response time, and 1.5M:1 contrast for ultra-smooth, tear-free play

  • Cabinet ColorBlack
  • Bezel DesignFrameless
  • Screen Size27"
  • WidescreenNo
  • Glare ScreenAnti-Glare, Low-Reflection of the front polarizer
  • PanelOLED

Option 540Hz

Les versions barrées existent, mais ne sont pas disponibles ici.

  • 480 Hz refresh rate delivers ultra-smooth motion for competitive gaming
  • 03 ms response time eliminates ghosting on fast-moving objects
  • OLED panel provides 1,500,000:1 contrast with deep blacks and bright highlights
  • 5% DCI-P3 coverage renders vivid, accurate colours across games and media
  • VESA ClearMR 21000 certification ensures sharp detail during rapid screen motion

27-inch 480 Hz OLED gaming monitor

The LG UltraGear 27GX790A-B is a 27-inch QHD OLED display built for competitive gaming. It delivers a 2560 x 1440 resolution with a 480 Hz refresh rate and a 0.03 ms grey-to-grey response time. Adaptive sync support covers FreeSync Premium Pro and G-Sync Compatible operation.

Sustained 480 Hz motion clarity with ClearMR 21000

The panel maintains its 480 Hz refresh rate under continuous load thanks to DisplayPort 2.1 bandwidth. VESA ClearMR 21000 certification confirms that fast-moving objects stay sharp without the faint blur seen on lower-tier panels. Typical brightness sits at 275 cd/m² with a minimum of 250 cd/m², while the 1,500,000:1 contrast ratio and 98.5 % DCI-P3 coverage remain stable during long sessions. DisplayHDR True Black 400 ensures deep blacks do not lift under heat.

Frameless design with adjustable stand and VESA

The virtually borderless cabinet allows multi-monitor alignment and the included stand provides height, tilt and pivot adjustment for ergonomic positioning. A 100 x 100 mm VESA pattern enables arm or wall mounting if desk space is limited. Connectivity includes one DisplayPort 2.1, two HDMI 2.1 ports and a USB 3.0 hub with one upstream and two downstream ports. The anti-glare low-reflection polariser reduces distractions in bright rooms.

Points forts

  • 480 Hz refresh rate delivers ultra-smooth motion for competitive gaming
  • 03 ms response time eliminates ghosting on fast-moving objects
  • OLED panel provides 1,500,000:1 contrast with deep blacks and bright highlights
  • 5% DCI-P3 coverage renders vivid, accurate colours across games and media
  • VESA ClearMR 21000 certification ensures sharp detail during rapid screen motion

Caractéristiques

BrandLG
SeriesUltraGear
Model27GX790A-B
Cabinet ColorBlack
Bezel DesignFrameless
Screen Size27"
WidescreenNo
Glare ScreenAnti-Glare, Low-Reflection of the front polarizer
PanelOLED
Display TypeQHD
Adaptive Sync TechnologyFreeSync Premium & G-Sync Compatible
Resolution2560 x 1440 (2K)
Viewing Angle178° (H) / 178° (V)
Aspect Ratio16:9
Brightness275 cd/m2 (Typ.), 250 cd/m2 (Min.)
Contrast Ratio1,500,000:1 (Typ.)
Response Time0.03ms (GtG)
Display Colors1.07 Billion
Monitor Pixel Density0.2292mm
Refresh Rate480Hz
HDR StandardHDR10
VESA Certified DisplayHDRDisplayHDR True Black 400
Curved Surface ScreenFlat Panel
HDMI2 x HDMI 2.1
DisplayPort1 x DisplayPort 2.1
Video Ports1 x DisplayPort 2.1 / 2 x HDMI 2.1
USB Ports1 x USB 3.0 Upstream / 2 x USB 3.0 Type-A Downstream
Headphone4-Pole (Sound+Mic)
Power SupplyType: External Power(Adapter)
Input: 100~240V (50/60Hz)
Power ConsumptionPower Save/Sleep Mode (Max): Less than 0.5W
DC Off (Max): Less than 0.3W
Stand AdjustmentsTilt (Angle): -5~15°
Swivel (Angle): -30~30°
Height Range (mm): 110mm
Down Height (mm): 118.2mm
Pivot (Angle): Clockwise
One Click Stand Set-up
Base Detachable
VESA Compatibility - Mountable100 x 100mm
FeaturesHDR 10
VESA DisplayHDR TRUE BLACK 400
HDR Effect
Factory Calibrated
H/W Calibration Ready
NVIDIA G-Sync G-SYNC Compatible
AMD FreeSync Premium
VRR
VESA Adaptive Sync
Reader Mode
Color Weakness Mode
Black Stabilizer
Dynamic Action Sync
Crosshair
FPS Counter
User Define Key
Auto Input Switch
Live Color Low Blue Light
Smart Energy Saving
RGB LED Lighting Hexagon Lighting
4-Side Virtually
Borderless Design
LG Calibration Studio (True Color Pro)
Dual controller
LG Switch
VESA DSC
SOUND: DTS Virtual:X
Dimensions18.5"-22.8" x 23.8" x 9.8" with stand
13.8" x 23.8" x 1.8" without stand
Weight20.5 lbs. with stand
11.2 lbs. without stand
Package ContentsPower Cord
Display Port Cable (ver 2.1)
HDMI Cable (ver 2.1)
Calibration Report (Paper)
USB A to B Cable
Poids d’expédition12.52 kg
Dimensions du colis813 × 527 × 178 mm

Autres versions de ce modèle

3 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

Will my graphics card handle 480 Hz at 2560 x 1440?

You need a GPU with DisplayPort 2.1 or HDMI 2.1 output and enough render performance for 480 frames per second at QHD. Check your card’s spec sheet for those interface versions.

Does the stand allow height, tilt and swivel adjustment?

The monitor ships with an ergonomic stand that provides height, tilt and swivel movement so you can set the 27 inch screen at a comfortable viewing angle.

What does the ClearMR 21000 rating mean for fast motion?

ClearMR 21000 is VESA’s top motion-clarity tier; it certifies that fast-moving objects stay sharp with virtually no visible blur during rapid gameplay.

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