LG BL55U 27BL55U-B 27" Black 2019

A razor-sharp 4K office monitor with top-tier ergonomics that's a steal if you snag it used. It's a terrible gaming monitor, but it was never trying to be one.

What surprised us most is how well this display scores for pure image quality, landing in the 90th percentile in our database. That 4K resolution on a 27-inch screen means everything is pin-sharp, and the 98% sRGB coverage keeps colors looking natural without being overhyped. But the performance score takes a hit because it's a 60Hz panel in a world that's quickly moving to high refresh rates. It's smooth for desktop work, but any fast motion looks a bit choppy compared to even a budget gaming screen.

Stacked against the OLED gaming giants like the MSI MAG 271QPX or Alienware AW2725D, this LG looks ancient for entertainment. Those monitors run circles around it with 240Hz+ refresh rates and infinite contrast, but they also cost significantly more and are overkill for Excel. The LG's real competition is other 4K 60Hz productivity panels. It stands out because of its strong ergonomics and TAA compliance, which is a niche but important checkbox for government contracts. For a pure office monitor, it's one of the better options, but creatives might want something with wider color gamut coverage.

Pricing is all over the map, from a reasonable $250 used to a baffling $16,590 from some sellers. The sweet spot is clearly that sub-$300 used market on Newegg, where this becomes a killer deal for a high-quality 4K office panel. At full retail or anywhere near the high end of that spread, you're getting fleeced. For the right price, it's a fantastic value for professionals who just need a dependable, sharp display.

The LG 27BL55U-B is a no-nonsense 4K workhorse that prioritizes clarity and ergonomics over flashy gaming features. If you're staring at spreadsheets, code, or design files all day, the 27-inch IPS panel delivers the kind of crisp text and accurate color that makes your eyes thank you. Just don't expect it to double as a gaming monitor. The 60Hz refresh rate and 5ms response time are strictly business-class, and the connectivity is bare-bones with just a headphone jack for audio.

If you're looking for a dual-purpose monitor that can handle gaming after hours, this isn't it. Go get a high-refresh-rate 1440p panel like the Gigabyte M27Q instead. You'll lose some pixel density but gain a much smoother experience for everything.

The LG 27BL55U-B is a purpose-built tool. It's not exciting, but it's exceptionally good at its job: displaying sharp, accurate 4K content for hours on end without fatigue. If you find it for a good price used, and your main gig is productivity or professional work, buy it without hesitation. Just know that after 5 p.m., you'll want a different screen for gaming.