Key takeaways
- 240Hz OLED delivers exceptionally clean, smear-free motion
- Perfect blacks and strong HDR contrast at True Black 400
- 1440p is easy to drive, so more GPUs can hit high frame rates
- Full HDMI 2.1 and adaptive sync support for PC and consoles
What's inside
The LG UltraGear OLED (27GX704A-B) is a 27-inch QHD gaming monitor built around a 240Hz OLED panel with a 0.03ms response time, aimed squarely at players who want the inky contrast of OLED at a resolution their graphics card can comfortably drive. At 1440p on a 27-inch screen, it sits in the sweet spot most gamers actually build around, rather than chasing 4K frame rates few systems can sustain.
This monitor is for the competitive-leaning gamer who prioritizes fast, fluid motion and deep blacks over sheer pixel count. If you play shooters, fighting games, or fast RPGs and own a solid mid-range or better GPU, the 27GX704A-B delivers high frame rates without forcing you to spend on a flagship card. Buyers who want a larger canvas, an ultrawide, or an even higher refresh rate have compelling options within LG’s own lineup, covered below.
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Watch: LG UltraGear OLED Review — Video Review
Design & Build
LG keeps the UltraGear aesthetic clean and mercifully understated, with thin bezels, a matte finish, and a sturdy stand offering tilt, height, swivel, and pivot adjustment. The build feels solid without being flashy, and the rear RGB is subtle enough to skip if you dislike lighting. Connectivity is a highlight for the class, with HDMI 2.1 and DisplayPort covering both PC and console duty, plus a USB hub for peripherals. The relatively compact 27-inch footprint fits normal desks easily, which is part of its everyday appeal.
Performance
Gaming is where this panel earns its keep. The 240Hz refresh rate paired with a 0.03ms response produces motion so clean that fast flick shots and quick camera pans stay perfectly legible. OLED contrast means true blacks and no backlight bloom, so dark scenes look dramatic instead of gray, and VESA DisplayHDR True Black 400 gives HDR content genuine punch. G-Sync compatibility and FreeSync Premium Pro keep tearing away across a wide frame-rate range.
The compromises are worth understanding. Like all OLEDs, full-screen brightness is modest, so a very bright room will mute the HDR impact, and the QHD resolution, while sharp on a 27-inch panel, is a step below the fine detail of a 4K screen for cinematic single-player titles. Text fringing from the OLED subpixel layout is minor here but visible if you look closely at small fonts. For its intended fast-paced use, none of these hold it back meaningfully.
Pros & Cons
- 240Hz OLED delivers exceptionally clean, smear-free motion
- Perfect blacks and strong HDR contrast at True Black 400
- 1440p is easy to drive, so more GPUs can hit high frame rates
- Full HDMI 2.1 and adaptive sync support for PC and consoles
- Lower peak brightness than LCD in bright rooms
- QHD lacks the fine detail of 4K for cinematic games
- Minor text fringing typical of OLED subpixel layouts
Alternatives to Consider
If you crave even faster motion, the LG 27GX790A-B pushes the same 27-inch QHD panel to a blistering 480Hz for esports diehards. Gamers who want 4K detail and the flexibility of a dual-mode panel should look at the LG 32GX850A-B, a 32-inch 4K OLED that switches between 165Hz at 4K and 330Hz at a lower resolution. And for a genuinely immersive experience, the LG 45GX950A-B curved 5K2K ultrawide wraps a massive OLED canvas around you at 165Hz.
Frequently Asked Questions
Is 1440p enough for a 27-inch OLED?
Yes. At 27 inches, QHD produces a sharp, dense image at a normal viewing distance, and it is far easier to drive at high frame rates than 4K, which is why it remains the most popular gaming resolution in 2026.
Does it work well with consoles?
It does. HDMI 2.1 supports high-refresh output from current consoles, and FreeSync Premium Pro keeps gameplay smooth, though the 27GX704A-B’s 240Hz ceiling is aimed more at PC players.
How bright does it get for HDR?
It meets DisplayHDR True Black 400, which looks excellent in a dim or moderately lit room thanks to perfect blacks, but its peak brightness in large bright scenes trails high-end LCDs.
Is burn-in a concern?
With mixed gaming use and LG’s built-in pixel-protection features, burn-in is unlikely for most people, but avoiding long hours of static UI elements at maximum brightness is still sensible.
Verdict
The LG UltraGear OLED 27GX704A-B is one of the smartest OLED buys of 2026 because it matches a superb 240Hz panel to a resolution most gamers can actually feed. You give up 4K sharpness and searing brightness, but in return you get gorgeous contrast, effortless high frame rates, and a display that feels tailor-made for fast-paced play. For competitive and mixed gamers on realistic hardware, it is an easy recommendation.
