LG Ultragear LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) Review

The LG UltraGear 27G640A-B offers elite 300Hz performance at a shockingly low $297. Its 98th percentile speed and 95th percentile color make it a spec sheet hero. Just be warned: its rock-bottom social proof score suggests you might be trading dollars for potential headaches.

The LG UltraGear 27G640A-B is a monitor that screams speed. Its 300Hz refresh rate lands it in the 98th percentile for performance in our database, which is a massive number for a 1440p panel. That means it's not just fast, it's in the elite tier for competitive gaming. For $297, you're getting a spec sheet that used to cost three times as much not long ago.

It's a 27-inch IPS screen with a 2560 x 1440 resolution, so you get sharp details alongside that blistering speed. It's also surprisingly well-rounded, scoring in the 88th percentile for ergonomics and features. But there's a catch, and it's not in the specs. The social proof score sits at a low 16th percentile, hinting at some real-world friction that we'll get into.

Let's talk about that 98th percentile performance score. A 300Hz refresh rate at 1440p is still a rare and potent combination. In practical terms, this monitor can display a new frame every 3.3 milliseconds. Pair that with the 1ms GtG response time and G-Sync/FreeSync Premium support, and you have a setup that virtually eliminates motion blur and tearing. It's the kind of smoothness that gives you a tangible edge in fast-paced shooters.

The color performance is no slouch either, hitting the 95th percentile. With 1.07 billion colors and HDR10 support, games look vibrant and detailed. The 400-nit brightness is solid for most rooms, though it's not going to win any HDR brightness wars. For a monitor so focused on speed, its color accuracy is a welcome bonus.

At $297, this monitor is an absolute steal on paper. You're getting a 1440p, 300Hz, feature-rich IPS panel for the price of a mid-range 144Hz screen. The value per dollar here is off the charts, especially when you consider its high percentile rankings in performance and color. Just be aware that the low price might come with some trade-offs in long-term reliability or customer support, which the abysmal social proof score hints at.

Compared to the 4K high-refresh crowd like the MSI MPG 32" 4K 240Hz, this LG trades ultimate resolution for much higher frame rate potential at a far lower price. Against the Samsung Odyssey Neo G9, you're giving up immersion and curve for a more standard, high-performance format. The most direct rival might be other 27" 1440p high-refresh monitors, but finding a true 300Hz panel at this price point is rare. The ASUS ROG Swift OLEDs will destroy it in contrast and response, but they cost three to four times as much and risk burn-in. This LG's play is pure, affordable speed.

Skip this monitor if you prioritize bulletproof reliability and hassle-free support. The 16th percentile social proof score is a giant, flashing warning sign. Also, look elsewhere if you're a content creator who needs perfect color accuracy (this is good, not professional-grade) or a console gamer whose hardware can't even approach 300 fps. Finally, HDR enthusiasts should aim for panels with higher brightness and local dimming.

This is a data-driven recommendation with a caveat. The specs and performance scores are fantastic, and for $297, it's a no-brainer for a budget-conscious competitive gamer who wants max frames. However, the 16th percentile social proof score and the customer feedback we've seen are major red flags. We'd recommend this only if you're comfortable rolling the dice on potential quality control or warranty issues for the sake of unbeatable price-to-performance.