LG 27GX790B-B

540Hz native with a boost to 720Hz in dual-mode makes this the highest refresh rate OLED on the market at release, and all nine sources land in the same place: this is a competitive esports tool, not a general-purpose monitor. Tom's Guide flagged that refresh rates this extreme are imperceptible to most users, which is the honest counterpoint to the spec sheet excitement. RTINGS confirmed it beats QD-OLED alternatives on raw refresh speed, and ownpetz.com tied it directly to titles like Counter-Strike 2 and Valorant where frame timing actually matters. You also need a GPU capable of pushing those frame rates, or the number is just marketing. FreeSync Premium Pro and G-SYNC Compatibility are both present, so adaptive sync is covered regardless of your card.

Best suited only for pure competitive gaming use case

— Woozy

Four sources independently confirmed the VESA DisplayHDR True Black 500 certification and 1,500 nit peak, which is a meaningful jump over older WOLED panels. Tom's Guide called it 'exceptionally bright HDR for an OLED gaming monitor,' and tftcentral.co.uk highlighted its strength for cinematic gaming. The RGB Tandem OLED panel architecture is what enables the brightness gain, and RTINGS credited that directly. The one real flag: RTINGS noted the monitor overbrightens content in HDR, which means out-of-box HDR accuracy isn't perfect even if the ceiling is high. For gaming that's often fine. For anything where tone mapping precision matters, it's worth knowing.

Exceptionally bright HDR for an OLED gaming monitor

— Tom's Guide

The 99.5% DCI-P3 figure is confirmed by four sources and represents a genuine improvement over previous-gen WOLED panels. RTINGS noted the sRGB mode is accurate enough to be viable for content creation, and Pcmonitors echoed that for dual-use creative and gaming workflows. But the nuance matters: RTINGS Computer specifically said calibration is still required for accuracy, and Woozy was blunter, suggesting casual gamers and content creators should look at other options entirely. This isn't a monitor that ships perfectly calibrated for professional color work. It's a gaming monitor with better-than-average color that can stretch into creative use with some setup.

More accurate sRGB mode suitable for content creation

— RTINGS

The 0.02ms specified response time is confirmed by Pcmonitors and ownpetz.com, and RTINGS validated low input lag with sharp motion in testing. In 720p/720Hz mode, ownpetz.com measured under 1.4ms frame time, which is the kind of number competitive players actually care about. Megekko flagged it as ideal for fast-paced racing titles too, so the motion performance extends beyond FPS. The one missing feature is Black Frame Insertion, which tftcentral.co.uk called out directly. BFI can improve perceived motion clarity at lower frame rates, and its absence is a real omission for a monitor positioned at this price point.

0.02ms specified grey-to-grey response time

— Pcmonitors

Five sources confirmed USB-C with DisplayPort Alt Mode, which is useful for laptop users, and three sources validated the HDMI 2.1 and DisplayPort 2.1 combination. Dual HDMI 2.1 with full VRR support, confirmed by Pcmonitors, is a genuine strength for multi-source setups. The catches: Lite-magazin confirmed no Power Delivery over USB-C, just 5W, which RTINGS Computer said means you'll need a separate laptop charger. tftcentral.co.uk flagged that DisplayPort 2.1 requires DSC compression to hit full bandwidth, and Pcmonitors noted the UHBR specification isn't confirmed. These aren't dealbreakers, but they're worth knowing before assuming the port selection is as capable as it looks on paper.

USB-C with DP Alt Mode and multiple USB ports

— TFT Central

Five sources praised the stand's ergonomic range, and tftcentral.co.uk specifically confirmed the full rotation capability. The flat pentagonal base saves desk space, and the subtle rear RGB fits without being loud. But the practical complaints stack up: tomsguide.com flagged that ports are rear-facing and require rotating the monitor to access, Lite-magazin and tomsguide.com both noted the stand shaft has no cable management opening, and Pcmonitors called out the external power brick. At $999.99, those are frustrating oversights. The monitor is also currently only available in China, which tftcentral.co.uk confirmed, making global buyers wait for a launch date that isn't confirmed.

Rudimentary cable management for thick cables

— Lite-magazin

Four sources confirmed the dual-mode implementation: 540Hz at native 1440p, or 720Hz by dropping to 720p resolution. RTINGS framed it as flexibility for players switching between competitive and immersive titles, which is the optimistic read. tftcentral.co.uk and ownpetz.com were more direct about the downside: 720p on a 27-inch screen is a meaningful clarity sacrifice, and ownpetz.com said the 720p mode should only be used when maximum competitive advantage is the explicit goal. Megekko suggested sticking with 540Hz QHD for the better balance of sharpness and speed. The feature exists and works, but it's a niche tool within an already niche product.

Dual-Mode feature boosts to 720Hz at 720p for competitive gaming

— RTINGS

The matte coating is the defining trade-off here. tftcentral.co.uk and RTINGS Computer both credited it for bright room usability, but RTINGS and Pcmonitors confirmed it reduces perceived clarity versus glossy panels. Woozy went further, recommending QD-OLED glossy alternatives for anyone where image fidelity is the priority. The monitor is 1440p with no 4K option, which Tom's Guide flagged as a hard limit for resolution-focused buyers. RTINGS confirmed it's not flicker-free, and Woozy raised a panel lottery risk with significant quality variance between units. That last point is the most concerning for a $999 purchase and the one that's hardest to verify before buying.

Consider QD-OLED glossy alternatives for better image fidelity

— Woozy