Key takeaways
- Fast 240Hz OLED panel with superb, smear-free motion clarity
- True blacks and excellent contrast from per-pixel lighting
- Dual G-Sync and FreeSync support with HDMI 2.1 for consoles
- Fully adjustable ergonomic stand at a sensible 27-inch size
What's inside
The LG UltraGear OLED (27GX704A-B) is a 27-inch QHD gaming monitor running a 240Hz OLED panel with a 0.03ms response time, tuned for players who prioritise motion clarity and low latency over sheer resolution. It carries both NVIDIA G-Sync compatibility and AMD FreeSync Premium Pro, plus HDMI 2.1 and DisplayPort connectivity.
This is a competitive-gaming display first and foremost, built for shooters and fast esports titles where a high refresh rate at a manageable 1440p resolution keeps frame rates high without demanding a top-tier GPU. Creators who need color-critical work or players fixated on 4K sharpness are better served elsewhere, but for pure gaming feel it’s tightly focused.
As an Amazon Associate we earn from qualifying purchases.
⚡ Save on Your Next PC — Amazon Prime
Prime members get fast free shipping on the systems above, plus early access to Prime Day & Black Friday PC deals. New members get a 30-day free trial.
Watch: LG UltraGear OLED Review — Video Review
Design & Build
LG keeps the UltraGear aesthetic restrained: a matte-black chassis, thin bezels, and a sturdy stand offering tilt, height, swivel and pivot adjustment so you can dial in an ergonomic position. The rear has a subtle gamer-styled look without going overboard on RGB, and the OLED panel’s anti-glare treatment handles ambient light reasonably well. Connectivity is generous for the class, with HDMI 2.1 and DisplayPort covering both consoles and PCs, and the overall build feels solid rather than flashy.
Performance
The 240Hz OLED panel is where this monitor sings. Motion is exceptionally clean thanks to the 0.03ms response, blacks are true, and the per-pixel lighting gives games a depth that IPS LCDs can’t match. At 27 inches, QHD strikes a sensible pixel density, and the high refresh rate combined with VRR keeps gameplay smooth and tear-free even when frame rates fluctuate. HDR True Black 400 support adds punch to darker scenes.
The trade-offs are the usual OLED ones plus a resolution question. Full-screen brightness is moderate rather than blinding, so bright-room HDR isn’t its strength, and static UI elements carry a small long-term burn-in risk. Some users also notice text fringing from the OLED subpixel layout, which is a non-issue in games but slightly softens small fonts on the desktop.
Pros & Cons
- Fast 240Hz OLED panel with superb, smear-free motion clarity
- True blacks and excellent contrast from per-pixel lighting
- Dual G-Sync and FreeSync support with HDMI 2.1 for consoles
- Fully adjustable ergonomic stand at a sensible 27-inch size
- Moderate full-screen brightness limits bright-room HDR impact
- OLED subpixel layout can cause slight text fringing on the desktop
- Long-term burn-in risk with persistent static elements
Alternatives to Consider
Players chasing an even higher refresh rate should look at the LG UltraGear OLED 27GX790A-B, which pushes 480Hz at the same QHD resolution for the most demanding esports setups. Those who want 4K sharpness can step up to the 32-inch LG UltraGear 32GX850A-B with its dual-mode panel, while buyers wanting a massive immersive curve should consider the 45-inch LG UltraGear 45GX950A-B 5K2K ultrawide.
Frequently Asked Questions
Is 240Hz overkill for a 27-inch QHD monitor?
Not for competitive players. At QHD a strong GPU can actually push high frame rates, so 240Hz delivers a tangibly smoother feel in fast games.
How does it handle HDR?
Dark-scene HDR looks excellent thanks to true blacks, but full-screen brightness is moderate, so it’s less impactful in very bright rooms.
Is text sharp enough for desktop work?
It’s usable, but the OLED subpixel layout can cause slight fringing on small fonts, so dedicated productivity users may prefer an LCD.
Does it work well with a PS5 or Xbox?
Yes. HDMI 2.1 and FreeSync support make it a strong console partner, with VRR keeping motion clean during frame-rate dips.
Verdict
The LG UltraGear OLED 27GX704A-B is a focused competitive display that delivers gorgeous, fast, tear-free motion at a resolution modern GPUs can actually drive hard. Its moderate brightness and minor desktop text quirks are typical OLED compromises, but for players who value responsiveness and image depth over 4K bragging rights, it’s an excellent buy.
