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LG Ultragear 27GX790A-B 27" QHD (2560×1440) Gaming Monitor | 480Hz OLED Display, 0.03ms Response, HDR, NVIDIA G-SYNC Compatible, FreeSync Premium, HDMI & DisplayPort + HDMI Cable + Cable Ties + More

LG Ultragear 27GX790A-B 27" QHD (2560×1440) Gaming Monitor

Bottom line: The LG Ultragear 27GX790A-B 27" QHD Gaming Monitor is a specs-and-price decision rather than a crowd-consensus one in the gaming monitors category, priced around $714.95. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

$714.95

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Mike Perry — Hardware researcher since 2014. For gaming and productivity monitors, synthesises manufacturer specs against measured monitor reviews (RTINGS, Monitors Unboxed) rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. How we check display specs →

*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.

Before you buy

  • Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

The LG UltraGear 27GX790A-B is a high performance 27 inch QHD OLED gaming monitor engineered for competitive players and immersive entertainment. Featuring a 2560 x 1440 resolution OLED panel, it delivers exceptional image clarity, deep blacks, and vibrant color with support for over one billion colors and 98.5 percent DCI P3 coverage. VESA DisplayHDR True Black 400 certification, a 1.5 million to one contrast ratio, and peak brightness up to 1300 nits ensure realistic highlights and shadow detail across games and media. Designed for speed, the monitor boasts an ultra fast 480 Hz refresh…

SpecPicks Verdict

SpecPicks scored LG Ultragear 27GX790A-B 27" QHD (2560×1440) Gaming Monitor | 480Hz… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the gaming monitors category. Compare with similarly-priced alternatives in the gaming monitors category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Bundle Items Include: LG UltraGear OLED 27GX790A-B 27" 1440p HDR 480 Hz Gaming Monitor, HDMI Cable, Cable Ties, LCD Screen Cleaning Kit
  • The LG UltraGear 27GX790A-B features a 27 inch QHD OLED panel with 2560 x 1440 resolution, delivering exceptional clarity, deep contrast, and lifelike color. With VESA DisplayHDR True Black 400 certification, up to 1300 nits peak brightness, and a 1.5 million to one contrast ratio, it produces vivid highlights and true blacks for immersive gaming and entertainment.
  • Built for competitive gaming, this UltraGear monitor offers an ultra fast 480 Hz refresh rate paired with an industry leading 0.03 ms response time. This combination dramatically reduces motion blur and ghosting, ensuring fluid visuals and precise motion clarity during high speed gameplay, esports competition, and fast paced action scenes.
  • AMD FreeSync Premium Pro and NVIDIA G Sync compatibility allow the display to dynamically synchronize its refresh rate with supported graphics cards. This adaptive sync performance minimizes screen tearing, stuttering, and input lag, delivering smooth and consistent visuals across a wide range of frame rates for a more responsive gaming experience.
  • Designed for comfort and immersion, the monitor includes ergonomic height, tilt, swivel, and pivot adjustments along with 178 degree viewing angles. DTS Headphone X enhances spatial audio for headphones, while RGB lighting accents and versatile connectivity including HDMI 2.1, DisplayPort, and USB hub support complete a premium gaming focused setup.

Full Specifications

BrandLG
Brightness1300 candela_per_square_meter
Model NameLG Ultragear 27GX790A-B
ResolutionQHD Wide 1440p
Unit Count1 Count
Screen Size27 inches
Aspect RatioUnknown
ConnectivityUSB
Display TypeOLED
Model Number27GX790A-B_AG9_1
Refresh Rate480 hertz
Adaptive SyncFreeSync Premium Pro, G-Sync Compatible
Response Time0.03 milliseconds
Screen FinishGlossy
Viewing Angle178 degrees
Contrast Ratio1500000:1
Total Usb Ports3
Native Resolution2560x1440
Display TechnologyOLED
Additional FeaturesAdaptive Sync
Full listing titleLG Ultragear 27GX790A-B 27" QHD (2560×1440) Gaming Monitor | 480Hz OLED Display, 0.03ms Response, HDR, NVIDIA G-SYNC Compatible, FreeSync Premium, HDMI & DisplayPort + HDMI Cable + Cable Ties + More

Ready to buy?

LG Ultragear 27GX790A-B 27" QHD (2560×1440) Gaming Monitor | 480Hz OLED Display, 0.03ms Response, HDR, NVIDIA G-SYNC Compatible, FreeSync Premium, HDMI & DisplayPort + HDMI Cable + Cable Ties + More is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $714.95

*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.

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