Key takeaways
- Exceptional motion clarity from the 240Hz refresh and 0.03ms OLED response
- Deep blacks and per-pixel contrast that give games excellent depth and HDR pop
- QHD resolution that mainstream GPUs can push to high frame rates
- G-Sync compatible and FreeSync Premium Pro with a fully adjustable stand
What's inside
The LG UltraGear OLED 27GX704A-B is a 27-inch QHD gaming monitor built on an OLED panel running at a 240Hz refresh rate with a 0.03ms response time. It brings OLED’s per-pixel contrast and rapid pixel transitions to the popular 1440p, 27-inch format, with G-Sync compatibility and FreeSync Premium Pro to keep fast-paced games smooth and tear-free.
This monitor is aimed at gamers who want the high-motion clarity of OLED at a resolution that mainstream graphics cards can drive at high frame rates, rather than the heavier demands of 4K. It is a strong all-rounder for competitive and single-player play alike. If you crave maximum sharpness or a massive canvas, a 4K or ultrawide UltraGear may appeal more.
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Watch: LG UltraGear OLED Review — Video Review
Design & Build
The 27GX704A keeps to LG’s understated UltraGear look, with a slim panel, thin bezels and a stable stand offering tilt, height, swivel and pivot adjustment. Build quality is solid and the design stays gamer-appropriate without being garish. It carries the modern outputs you would expect, including HDMI and DisplayPort, and supports VESA DisplayHDR True Black 400 for OLED-appropriate HDR. The panel’s finish and LG’s OLED care features aim to keep the image consistent and mitigate long-term wear.
Performance
Where this monitor shines is motion. The combination of a 240Hz refresh rate and OLED’s 0.03ms response produces exceptionally clean, blur-free movement that competitive players will appreciate, and the per-pixel contrast gives games deep blacks and punchy highlights that LCD panels cannot match. QHD on a 27-inch screen is a comfortable pixel density, and G-Sync plus FreeSync Premium Pro keep frame delivery smooth across a wide range of hardware.
As with all OLEDs, brightness is the main compromise. Full-screen peak brightness is lower than top mini-LED gaming panels, so in a bright room the image can feel less dazzling, and HDR highlights, while excellent in contrast, are not the brightest around. QHD also means it is not as razor-sharp as a 4K display for desktop text or detailed content, and OLED burn-in remains a long-term consideration with heavy static use, though LG includes protection measures.
Pros & Cons
- Exceptional motion clarity from the 240Hz refresh and 0.03ms OLED response
- Deep blacks and per-pixel contrast that give games excellent depth and HDR pop
- QHD resolution that mainstream GPUs can push to high frame rates
- G-Sync compatible and FreeSync Premium Pro with a fully adjustable stand
- Lower full-screen brightness than mini-LED rivals, less ideal for very bright rooms
- QHD is not as sharp as 4K for text and fine detail on a 27-inch panel
- OLED burn-in remains a long-term risk with static on-screen elements
Alternatives to Consider
If you want even faster motion for esports, the LG 27GX790A-B pushes the same 27-inch OLED to a 480Hz refresh, while gamers chasing sharpness should look at the 32-inch LG 32GX850A-B, a 4K dual-mode OLED. For a more immersive experience, the curved ultrawide LG 45GX950A-B offers a sweeping 5K2K canvas, though it demands far more from your graphics card and wallet.
Frequently Asked Questions
Is 240Hz overkill at QHD?
Not for fast-paced games. A 240Hz refresh paired with OLED’s near-instant response delivers noticeably cleaner motion, and QHD is easy enough to drive that mainstream GPUs can reach high frame rates to use it.
How is the brightness for HDR?
Contrast and black levels are outstanding thanks to True Black 400 certification, but full-screen and peak brightness are lower than mini-LED panels, so HDR looks best in a controlled lighting environment.
Should I get this or a 4K OLED?
Choose this for higher frame rates on mainstream hardware and competitive motion clarity. Choose a 4K OLED like the 32GX850A if you value sharpness and desktop detail and have a powerful GPU.
Is burn-in a concern?
It is a long-term possibility with any OLED, but LG includes protective features to reduce the risk, and varied gaming and media use makes it unlikely to become an issue for most owners.
Verdict
The LG UltraGear OLED 27GX704A-B is an excellent 27-inch QHD gaming monitor that delivers class-leading motion clarity, deep OLED contrast and smooth, tear-free play at a resolution mainstream hardware can comfortably drive. Its limits are OLED’s modest brightness and QHD’s lower sharpness versus 4K. For gamers who prioritize fluid, high-refresh motion over outright pixel count, it is one of the most satisfying panels in its class.
