UltraGear OLED GX7 (27GX790A)

Released November 2024

LG's 27-inch-class (26.5-inch) 1440p OLED gaming monitor with a 480Hz refresh rate and an MLA+ WOLED panel, suited to competitive PC gamers.

Size: 26.5″
Resolution: 2560 × 1440
PPI: 111
Panel: OLED
Refresh: 480 Hz
Brightness: 275 nits
HDR: True Black 400
USB-C power: –

What reviewers say

Reviewers agree it is one of the fastest gaming monitors available, praising its very responsive 480Hz motion, low latency, deep blacks and understated design. Tom's Hardware found HDR brighter than rivals but the image best after calibration, while PC Gamer found full-screen brightness lacking against newer panels; Trusted Reviews found the ports meagre and the price high.

From tomshardware.com, pcgamer.com and trustedreviews.com

Specifications

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Display

Screen size: 26.5″
Resolution: 2560 × 1440 (QHD)
Sharpness: 111 pixels per inch
Panel: OLED (WOLED with Micro Lens Array+ (MLA+))
Refresh rate: 480 Hz
Response time (grey to grey): 0.03 ms
Brightness (typical): 275 nits
HDR peak brightness: 1,300 nits
HDR certification: DisplayHDR True Black 400
HDR formats: HDR10
Contrast ratio: 1,500,000:1
Colour range: 98.5% DCI-P3 (CIE 1976)
DCI-P3 coverage: 98.5%
Screen finish: Matte
Shape: Flat
Adaptive sync: G-Sync Compatible, FreeSync Premium Pro
Colour depth: 10-bit (1.07 billion colours)
HDR detail: HDR10; 1,300 nits peak (APL 1.5%), 275 nits at APL 100%
Viewing angles: 178° horizontal, 178° vertical (CR ≥ 10)
Pixel pitch: 0.2292 x 0.2292 mm
Eye care: Reader Mode, Color Weakness mode
Calibration: Factory calibrated (Delta E ≤ 2, paper report included); hardware calibration ready (LG Calibration Studio)

Connections

Video inputs: 2 × HDMI 2.1, DisplayPort 2.1
USB-C charging: None
USB ports: 2 × USB-A
Ethernet: No
Speakers: No
DisplayPort detail: 1 x DisplayPort 2.1 with DSC
USB hub detail: 2 x USB 3.0 downstream, 1 x USB 3.0 upstream (USB-B)
Audio out: 4-pole headphone out (sound + mic), DTS Headphone:X

Design

Stand adjusts: Height, tilt, swivel, pivot
VESA mount: Yes
Weight with stand: 9.3 kg
VESA pattern: 100 x 100 mm
Size with stand: 605.2 x 579.3 x 249.1 mm (raised), 605.2 x 469.3 x 249.1 mm (lowered) (W x H x D)
Size without stand: 605.2 x 351.0 x 45.3 mm (W x H x D)
Weight without stand: 5.1 kg
Controls: User Defined Key, Dual Controller software

Power and support

Power use: Less than 0.5 W (sleep), less than 0.3 W (DC off)
Power supply: External adapter, 100–240 V AC, 50/60 Hz; 19 V 7.37 A
Software: LG Calibration Studio (True Color Pro), Dual Controller
In the box: Stand body and base, power adapter and cord, HDMI 2.1 cable (1.8 m), DisplayPort 2.1 cable, USB-A to B cable, calibration report

Pros and cons

Pros

480Hz at 2560 x 1440 with 0.03ms GtG response
DisplayPort 2.1 input plus two HDMI 2.1 inputs
VESA DisplayHDR True Black 400, with a 1,300-nit peak at 1.5% APL

Cons

275-nit typical full-screen brightness
No USB-C input
Heavy at 9.3 kg with the stand

Closest rivals

Model	Size	Resolution	PPI	Panel	Refresh	Brightness	HDR	USB-C power	Released
AcerPredator X27U F5	26.5″	2560 × 1440	111	QD-OLED	500 Hz	300 nits	True Black 500	65 W	Aug 2025
HPHyperX OMEN OLED 27qs	26.5″	2560 × 1440	111	QD-OLED	500 Hz	300 nits	True Black 500	100 W	Jan 2026
MSIMAG 272QP QD-OLED X50	26.5″	2560 × 1440	111	QD-OLED	500 Hz	300 nits	True Black 500	15 W	Aug 2025

Sources

Photo: lg.com

LG 27GX790A, Front view of 27" LG UltraGear™ OLED 480Hz QHD Gaming Monitor, Black 27GX790A-B: LG, official UK product gallery
LG 27GX790A, +15 degree side view: LG, official UK product gallery
LG 27GX790A, side view: LG, official UK product gallery
LG 27GX790A, rear view with lights on: LG, official UK product gallery
LG 27GX790A, rear view with lights off: LG, official UK product gallery

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