Key takeaways
- Superb per-pixel response and clean 240Hz motion
- True Black HDR with genuine OLED contrast
- Fully adjustable stand plus HDMI 2.1 and DisplayPort
- QHD resolution is realistic for mid-range GPUs to drive
What's inside
The LG 27GX704A-B sits in the sweet spot of LG’s 2026 UltraGear OLED line: a 27-inch QHD panel running at 240Hz with the near-instant 0.03ms response that only OLED delivers. It pairs a WOLED panel with G-Sync Compatible and FreeSync Premium Pro certification, so it slots into either an NVIDIA or AMD build without fuss.
It is aimed at competitive and single-player gamers who want inky OLED contrast and high refresh at a resolution their GPU can actually sustain, rather than chasing 4K frame rates. If you run a mid-to-high-end card and sit at a normal desk distance, this is the panel that makes sense before you spend on bigger, pricier UltraGear models.
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Watch: LG UltraGear OLED Review — Video Review
Design & Build
LG keeps the aesthetic restrained: thin top and side bezels, a hexagonal rear with a subtle RGB ring, and a sturdy metal-and-plastic stand that tilts, swivels, pivots and adjusts height. The stand has a smaller footprint than earlier UltraGears, which frees up desk space, and the 100×100 VESA mount is there if you prefer an arm. Inputs cover HDMI 2.1, DisplayPort and USB, and the joystick control sits exactly where your thumb expects it.
Performance
This is where the panel earns its keep. Motion clarity at 240Hz is excellent, with no visible smearing in fast pans, and the per-pixel response makes ghosting a non-issue. DisplayHDR True Black 400 gives real black levels rather than the grey wash of edge-lit LCDs, so HDR games and dark scenes look genuinely deep.
The trade-offs are the usual OLED ones. Peak brightness is strong in small highlights but full-screen SDR brightness is more modest than a bright IPS, so a sunlit room can wash it out. Text fringing from the WOLED subpixel layout is minor but noticeable to some on the desktop, and you will want to keep LG’s logo-dimming and pixel-refresh features enabled to protect against burn-in over years of use.
Pros & Cons
- Superb per-pixel response and clean 240Hz motion
- True Black HDR with genuine OLED contrast
- Fully adjustable stand plus HDMI 2.1 and DisplayPort
- QHD resolution is realistic for mid-range GPUs to drive
- Full-screen brightness trails a good IPS in bright rooms
- WOLED text fringing can bother desktop/office use
- Burn-in risk means care features must stay on
Alternatives to Consider
If QHD is not enough, the LG 32GX850A-B steps up to a 32-inch 4K dual-mode panel that can switch to a faster refresh at lower resolution, and the LG 27GX790A-B pushes the same 27-inch class to a blistering 480Hz for esports players. If you want an immersive ultrawide instead, the curved LG 45GX950A-B 5K2K is the flagship-tier option, though it costs considerably more and demands a much stronger GPU.
Frequently Asked Questions
Is 240Hz overkill for this resolution?
No. QHD is light enough for current mid-to-high GPUs to feed high frame rates, so most fast-paced titles will actually reach or approach 240fps, unlike 4K where you often fall short.
Should I worry about OLED burn-in?
For typical mixed gaming and media use it is low-risk over the warranty period, provided you leave LG’s pixel-refresh and logo-dimming features enabled and avoid leaving static HUDs on screen for hours at max brightness.
Does it work with both NVIDIA and AMD?
Yes. It is G-Sync Compatible and FreeSync Premium Pro certified, so variable refresh works on either brand of graphics card.
Is it bright enough for a well-lit room?
Small highlights get plenty bright, but sustained full-screen brightness is lower than a strong IPS. In a very sunny room you may want to control glare with blinds or positioning.
Verdict
The LG 27GX704A-B is the UltraGear OLED most people should buy: it delivers the contrast, response and 240Hz clarity that make OLED special at a resolution your GPU can realistically drive, and only stumbles on the brightness and text-clarity caveats inherent to the panel type. For a gaming-first monitor in 2026, it is an easy recommendation.
