Key takeaways
- Exceptional motion clarity from 240Hz OLED with 0.03ms response
- QHD resolution is far easier to drive at high frame rates than 4K
- Perfect blacks, strong HDR contrast and vivid color
- Full adjustability plus HDMI 2.1 and dual variable-refresh support
What's inside
The LG UltraGear 27GX704A-B is a 27-inch QHD OLED gaming monitor running a 2560×1440 panel at a blistering 240Hz with a 0.03ms response time. It uses LG’s WOLED technology with a matte-leaning finish, and carries the full stack of gaming credentials: NVIDIA G-Sync compatibility, AMD FreeSync Premium Pro, VESA DisplayHDR True Black 400 and HDMI 2.1.
It is built for competitive and mixed-genre PC gamers who want OLED response and contrast at a resolution their GPU can actually drive at high frame rates. QHD at 27 inches is the sweet spot for many players, sharp enough to look great without the punishing GPU load of 4K.
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Watch: LG UltraGear OLED Review — Video Review
Design & Build
LG keeps the UltraGear look clean and understated: thin bezels, a sturdy tilt/height/swivel/pivot stand, and a hexagonal rear with optional lighting. The panel coating resists glare well, avoiding the mirror reflections of glossy rivals, which suits a bright gaming room. Connectivity covers HDMI 2.1 and DisplayPort plus a USB hub, and the stand’s small footprint frees up desk space. It is a well-made monitor, though the plastics feel a notch below Samsung’s metal-heavy chassis, and the onboard joystick menu, while functional, is a little slow to navigate.
Performance
In motion this display is outstanding. The combination of 240Hz and OLED’s near-instant pixel transitions produces some of the cleanest fast-motion clarity available at this resolution, with no visible smearing or ghosting in shooters or racers. Input lag is very low, and G-Sync plus FreeSync keep frame delivery tear-free across a wide range.
Contrast and color are classic OLED: true blacks, excellent HDR pop within its brightness envelope, and rich, well-saturated color out of the box. The limits are the usual ones. Full-screen brightness is modest, so HDR highlights impress more than overall SDR luminance in a bright room. WOLED text can show faint color fringing on fine fonts, a minor annoyance for heavy desktop work, and QHD on 27 inches is a touch less crisp than a 4K panel of the same size.
Pros & Cons
- Exceptional motion clarity from 240Hz OLED with 0.03ms response
- QHD resolution is far easier to drive at high frame rates than 4K
- Perfect blacks, strong HDR contrast and vivid color
- Full adjustability plus HDMI 2.1 and dual variable-refresh support
- Limited full-screen brightness in bright rooms
- WOLED subpixel structure can cause slight text fringing
- Plastic build feels less premium than metal-chassis competitors
Alternatives to Consider
Chasing the absolute highest frame rates? The LG 27GX790A-B pushes the same 27-inch QHD OLED to a staggering 480Hz for esports. If you want 4K sharpness with flexibility, the LG 32GX850A-B offers a 32-inch dual-mode panel that switches between 4K/165Hz and a faster 330Hz mode. And for sheer immersion, the ultrawide LG 45GX950A-B curves a 5K2K OLED across 45 inches with a dual-mode refresh option.
Frequently Asked Questions
Is QHD sharp enough on a 27-inch monitor?
For gaming, yes, the pixel density is comfortable and text is readable. It is slightly softer than 4K at the same size, but the far lower GPU demand at 240Hz is a worthwhile trade for most players.
How does it compare to a 480Hz OLED?
This 240Hz panel is already extremely smooth for nearly everyone. The 480Hz 27GX790A only pays off for dedicated competitive players with GPUs capable of pushing those frame rates.
Is it bright enough for HDR?
It meets DisplayHDR True Black 400, so highlights and contrast look great in dim to moderate lighting. Like all OLEDs, it is less about raw brightness than about the perfect blacks that make HDR pop.
Will text look good for work?
Generally yes, though the WOLED subpixel layout can produce faint fringing on small fonts. It is fine for mixed use but not the ideal choice if you spend all day in text documents.
Verdict
The LG UltraGear 27GX704A-B hits a smart balance: OLED image quality and 240Hz motion at a resolution your graphics card can realistically sustain. Brightness and text sharpness carry the usual OLED caveats, and the build is functional rather than luxurious, but as an all-round gaming monitor for 2026 it delivers where it matters most and is easy to recommend.
