LG 27U631A-B 27-inch QHD (2560 x 1440) IPS Computer Monitor
Bottom line: The LG 27U631A-B 27-inch QHD IPS Computer Monitor: 100Hz refresh and 5ms GTG beat the 60Hz norm in this bracket; main trade-off: 15W USB-C PD is too low to charge most 15-inch laptops.
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Pros & Cons
Pros
- ✓ 100Hz refresh and 5ms GTG beat the 60Hz norm in this bracket
- ✓ Up to 99% sRGB coverage plus HDR10 for fuller color
- ✓ USB-C input carries video and 15W laptop charging on one cable
- ✓ Switch app splits the screen into up to 6 custom sections
Cons
- ✗ 15W USB-C PD is too low to charge most 15-inch laptops
- ✗ 100Hz trails the 144Hz-180Hz found on gaming-focused 1440p panels
- ✗ HDR10 on a standard-brightness IPS panel is tone-mapping, not true HDR
- ✗ Ultra-slim stand offers no listed height, pivot, or swivel adjustment
Manufacturer description
IPS technology keeps color and contrast stable at wide viewing angles, while HDR10 support and up to 99% sRGB coverage give games, photos, and video a fuller color range than a standard sRGB-limited panel. For gaming, the 100Hz refresh rate and 5ms GTG response time smooth out motion that would smear on a 60Hz screen, and LG layers on Dynamic Action Sync for reduced input lag plus Black Stabilizer to brighten shadowed scenes so enemies hiding in the dark stay visible. Productivity gets equal attention: a single USB Type-C cable carries video and up to 15W power delivery to a connected…
SpecPicks Verdict
SpecPicks scored LG 27U631A-B 27-inch QHD IPS Computer Monitor using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming monitors category. Compare with similarly-priced alternatives in the gaming monitors category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Is the LG 27U631A-B good for gaming?
It handles mainstream gaming well with a 100Hz refresh rate, 5ms GTG response, Dynamic Action Sync for reduced input lag, and Black Stabilizer to brighten dark scenes. Competitive esports players who want 144Hz or higher should look at a faster panel.
Can I charge my laptop through the USB-C port?
Yes, the USB Type-C port delivers up to 15W power delivery alongside video and data over a single cable. That is enough for tablets, phones, and low-draw ultrabooks, but most full-size laptops draw more than 15W and will charge slowly or not at all.
What resolution and panel type does this monitor use?
It is a 27-inch QHD display at 2560 x 1440 using IPS technology, which holds color and contrast accurate at wider viewing angles than VA or TN panels.
Does it support HDR, and how good is the color?
The monitor supports HDR10 and covers up to 99% sRGB. That sRGB figure makes it suitable for general photo and video work in the sRGB space; it does not list Adobe RGB or DCI-P3 coverage for wide-gamut professional work.
Key Features
- Vivid Visuals at Wide Viewing Angles - Experience exceptional picture quality with the 27" QHD (2560x1440) display, with IPS technology for vivid and vibrant visuals - even at wider viewing angles.
- 100Hz Smoother, Seamless Visuals - With a 100Hz refresh rate and 5ms(GTG) response time, on screen visuals are rendered clearly for ultra-smooth motion and fluidity.
- Bold Color on a 27" Screen - Immerse yourself in a world of brilliant color from HDR10 that helps enhance picture quality and up to 99% sRGB color gamut expression to make games visually pop.
- Multiple Devices-One Cable - Seamlessly connect to external devices or charge your laptop with the convenience of USB Type-C with up to 15W power delivery.
- Easy Viewing, Comfortable Reading - This monitor comes with Reader Mode which can reduce blue light emission to help provide a reduction in eye fatigue.
- Action as It Happens - Get a pro-level experience with the closest thing to real-time gaming. Dynamic Action Sync elevates your gameplay so you can respond every moment of the action with reduced input tag and unbelievable performance.
Full Specifications
| Brand | LG |
|---|---|
| Color | Black |
| Voltage | 240 volts |
| Brightness | 250 cd |
| Model Name | 27U631A-B.AUSQ |
| Resolution | QHD Wide 1440p |
| Unit Count | 1 Count |
| Color Gamut | 0.99 |
| Pixel Pitch | 0.23 |
| Screen Size | 27 inches |
| Aspect Ratio | 16:9 |
| Connectivity | USB |
| Display Type | LED |
| Model Number | 27U631A-B.AUSQ |
| Refresh Rate | 100 hertz |
| Adaptive Sync | FreeSync |
| Compatibility | PC, Switch |
| Mounting Type | Wall Mount |
| Response Time | 5 milliseconds |
| Screen Finish | Matte |
| Full listing title | LG 27U631A-B 27-inch QHD (2560 x 1440) IPS Computer Monitor, 100Hz, 5ms, HDR10, Reader Mode, Flicker Safe, HDMI, USB Type-C 15W PD, Black |
Ready to buy?
LG 27U631A-B 27-inch QHD (2560 x 1440) IPS Computer Monitor, 100Hz, 5ms, HDR10, Reader Mode, Flicker Safe, HDMI, USB Type-C 15W PD, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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