LG 24U631A-B 23.8" Black 2025

The LG 24U631A-B is a 24-inch QHD IPS monitor with a smooth 100Hz refresh rate and handy USB-C connectivity. It's a standout choice for a compact desk setup if you can find it at a reasonable price, ideally under $200. Just avoid the overpriced listings and don't expect much from the HDR.

Out of the box, the 100Hz refresh rate is the most immediately gratifying spec here. Even just dragging windows around or scrolling through long documents feels smoother than a standard 60Hz office monitor. The 5ms GtG response time keeps motion reasonably clear, though you'll see some ghosting in faster-paced games if you push it. In our database, the overall performance lands right at the 50th percentile, which is about average for the category. It's not breaking records, but it's not a slouch either.

The color performance is a bit of a mixed bag. That 99% sRGB coverage is solid and sits at the 59th percentile, meaning it's perfectly adequate for web design or photo editing as long as you're not doing print-critical work. The 250-nit peak brightness, however, is where things get a little dim. It's fine for a controlled office environment, but if you're near a sunny window, you might find yourself squinting. HDR content technically plays, but without the brightness to back it up, it doesn't add much to the experience. For pure productivity, though, the 2560x1440 resolution on a 23.8-inch panel gives you a pixel density that makes text look fantastic.

Stacked against the competition, the LG 24U631A-B carves out a niche that bigger names often miss. The Dell S2725QC is a 27-inch 4K monitor that will give you more screen real estate and sharper text, but it's capped at 60Hz and usually costs more. If you value smoothness over pure pixel count, the LG's 100Hz panel is the better daily driver. Then there's the ASUS TUF Gaming VG27AQL5A, which is a 27-inch 1440p gaming monitor with a much higher 170Hz refresh rate. It'll run circles around the LG in games, but it's bulkier and lacks the clean, professional look some people want for a home office.

The BenQ MA270U is another 27-inch 4K contender aimed at creatives with better color accuracy, but again, you're stuck at 60Hz. The LG's real advantage is its size. Finding a high-refresh 24-inch QHD monitor is surprisingly difficult, and that's where this model shines. It's for someone who wants a dense, smooth display without a massive footprint. The Acer Nitro XV272U is probably its closest spiritual competitor, offering similar specs in a 27-inch size, but if you specifically need a smaller screen, the LG is one of the few games in town.

Value is a tricky conversation with this monitor because the price is all over the place. We've seen it listed for as low as $154, which is an absolute steal for a 1440p IPS panel with USB-C and 100Hz. At that price, it's a no-brainer for a secondary display or a primary driver for a clean desk setup. But then you have vendors asking over $2,700, which is frankly absurd and puts it against high-end OLEDs and professional 4K displays. If you're shopping for this, your only job is to find it at the lower end of that spectrum. Newegg seems to be the place with the most reasonable listings and fast shipping, so that's where we'd point you. At a fair price, it undercuts a lot of 24-inch 4K monitors by offering a higher refresh rate, even if it sacrifices a bit of resolution.

The LG 24U631A-B is one of those monitors that makes you do a double take. A 24-inch QHD panel with a 100Hz refresh rate and USB-C connectivity? That's a surprisingly rare combo, and it immediately puts this display on the map for anyone who wants a sharp, compact screen that doesn't feel sluggish. We pulled it into our database expecting a basic office monitor, but the spec sheet tells a different story. It's a 1440p IPS panel covering 99% of the sRGB gamut, which means colors look accurate and text is crisp. If you've been squinting at a 1080p screen all day, the jump in clarity here is immediately noticeable.

Build-wise, it's a straightforward affair. You get a tilt-only stand and a VESA 100x100 mount if you want to slap it on an arm. At 3600 grams, it's not exactly a featherweight, but it's manageable. The port selection is minimal, just one HDMI and one USB-C, but that USB-C port is the real star if you're using a modern laptop. It handles video and power delivery, so you can ditch the dongle. Our biggest eyebrow raise came from the price spread we're seeing across vendors, ranging from a reasonable $154 all the way up to a head-scratching $2,756. Clearly, you'll want to shop around.

For a monitor aimed at office work and light creative tasks, the 24U631A-B hits a sweet spot. It's not trying to be a gaming beast or a professional color grading monitor. It's a practical, high-resolution display for people who value screen real estate in a smaller footprint. The 250-nit brightness is fine for indoor use, though it won't blow you away, and HDR10 support is more of a checkbox feature than a real benefit at this brightness level. Still, for the right price, this is a compelling little workhorse.

This monitor isn't for everyone. If you're a competitive gamer, the 5ms response time and lack of extreme refresh rates will hold you back, and you'd be better off with something like the ASUS TUF Gaming VG27AQL5A. Creative professionals who need high brightness for HDR work or Adobe RGB coverage for print should also pass, as the 250-nit panel and sRGB-only gamut are limiting. And if you just want a big screen for media consumption, a 27-inch 4K monitor like the Dell S2725QC will give you a more immersive experience for a similar price.

The LG 24U631A-B is a monitor that knows exactly what it is, and we respect that. It's not trying to win any spec wars. It's a sharp, smooth, and compact display that solves a very specific problem for people with limited desk space who still want a premium feel. The USB-C connection makes it a perfect companion for a MacBook or a modern Windows laptop, turning a cluttered desk into a clean, one-cable setup. The 100Hz refresh rate is the secret sauce that makes it feel more premium than a typical office monitor.

Should you buy it? If you can find it for under $200 and you want a 24-inch QHD monitor, absolutely. It's a fantastic little display for productivity and light creative work. If you're a gamer looking for high frame rates or someone who needs HDR for content consumption, you should look elsewhere. And seriously, don't pay more than $300 for this thing. The inflated prices from some third-party sellers are a trap. At its real price, it's a gem. At the fake prices, it's a joke.