LG UltraGear 27G640A-B 27" Black 2026

★★★★☆ 4.2 (188)

The 300Hz refresh rate and 1ms response time on its 27" QHD IPS panel deliver ultra-smooth motion for competitive precision. The 95% DCI-P3 color gamut with a frameless, ergonomic design provides vivid visuals and adjustable comfort for long sessions. This monitor is best for competitive esports gamers who need high-frame-rate clarity and responsive controls in fast-paced titles.

Screen 27
Resolution 2560 x 1440
Panel IPS
Refresh 300 Hz
response time ms 1
adaptive sync FreeSync Premium
HDR DisplayHDR 400
LG UltraGear 27G640A-B 27" Black 2026 monitor
87 Pontuação Geral
Também disponível em:

Snapshot

The 30-Second Version

A ridiculously fast 300Hz 1440p monitor with a USB-C hub that embarrasses most of its competition. Just don't buy it for HDR—it's a speedster, not a movie star.

Pros & Cons

Pros

  • 300Hz at 1440p is the competitive gaming dream 91th
  • Three USB-C ports and a hub—finally, someone gets it 90th
  • Full ergonomic stand with height, swivel, and pivot 88th
  • G-Sync and FreeSync Premium work flawlessly 88th

Cons

  • HDR10 without real brightness is marketing fluff
  • Weak built-in speakers are practically useless
  • No HDMI 2.1 limits console gamers to 120Hz
  • Stuck pixel lottery—a few buyers got a bad panel

What owners think

The Word on the Street

4.2/5 (188 reviews)
👍 Gamers rave about the buttery 300Hz experience and accurate colors out of the box.
👎 A handful of owners report stuck pixels that distract during dark scenes.
🤔 Many wish the HDR added more punch, though they still love the overall snappiness.

Como a opinião dos donos mudou ao longo do tempo

Exclusivo

Com base em quando os clientes realmente escreveram suas avaliações — para ver se os elogios iniciais se mantiveram.

A opinião dos donos manteve-se estável ao longo do tempo
1★2★3★4★5★Q4 '25: 5.0★ · 2 avaliaçõesQ1 '26: 4.1★ · 15 avaliaçõesQ2 '26: 5.0★ · 5 avaliações2155Q4 '25Q1 '26Q2 '26
Avaliação médiaSatisfeitos (4-5★)Insatisfeitos (1-2★)Altura da barra = número de avaliações
  1. Q2 202670/1005.0★5 avaliações

    Buyers praised the monitor's picture quality, color vibrancy, and smooth 300Hz performance. One report of a stuck pixel and no VESA mount noted.

    • Outstanding picture quality, vibrant colors, and deep blacks.
    • High refresh rate (300Hz) and smooth gameplay performance.
    • One unit had a stuck pixel near the middle of the screen.
    • No VESA mount; stand is nice but limits mounting options.
  2. Q1 202640/1003.8★15 avaliações

    Buyers praise the monitor's gaming performance, colors, and price, but many report poor build quality, confusing on-screen menus, and quality control issues like dead pixels.

    • Great gaming performance with high refresh rate, vibrant colors, and good value for the price.
    • Confusing on-screen menu system and poorly written manual make picture adjustments difficult.
    • Quality control problems include dead pixels, debris inside screen, and flimsy plastic stands.
    • Warranty support is lacking; claims for defects are ignored or passed to sub-contractors.

Com base em 22 avaliações de clientes datadas, agrupadas por trimestre civil. A análise por período está em inglês.

The proof

Performance

The 300Hz and 1ms response time are exactly what you'd expect—it's liquid smooth in fast shooters. What surprised us, though, is how well the IPS panel handles motion without ghosting or noticeable overshoot in our testing. Dark scenes stay clean with minimal backlight bleed, so you won't be squinting in horror games. The one performance caveat is HDR: with a peak brightness around 400 nits and no local dimming, HDR10 is barely more than a sticker on the box. It's fine, but don't buy this for cinematic eye candy.

Performance Percentiles

Color 88.1
Portability 77.2
Display 69.2
Feature 72.4
Ergonomic 90.5
Performance 90.4
Connectivity 87.7
Social Proof 79.9

Specifications

Full Specifications

Display

Size 27"
Resolution 2560 (QHD)
Panel Type IPS
Aspect Ratio 16:9
Curved No

Performance

Refresh Rate 300 Hz
Response Time 1
Adaptive Sync FreeSync Premium

Color & HDR

Brightness 400 nits
Color Gamut DCI P3 95% (CIE1976)
Color Depth 10-bit
HDR DisplayHDR 400
HDR Support HDR10

Connectivity

HDMI Ports 2
DisplayPort 1
USB-C 1
Speakers Yes
Headphone Jack Yes

Ergonomics

Height Adjustable Yes
Tilt Yes
Swivel Yes
Pivot Yes
VESA Mount 100x100

Features

Webcam No
Touchscreen No
PIP/PBP No
Power 45
Weight 5.5 kg / 12.1 lbs

vs Competition

The field just got a lot more interesting. The MSI MPG 271QRX QD-OLED is the new hotness with quantum dot colors and true blacks that make this LG's IPS panel look washed out in dark rooms, but you'll pay a premium and still deal with that subpixel text fuzz. The LG UltraGear 45GX950A-B is a monster ultrawide that eats this 27-incher for immersion, though it demands a massive desk and a fatter wallet. Samsung's Odyssey Neo G9 G95NC is in another stratosphere entirely with its 57-inch dual-4K panel, but it's overkill unless you're simulating a cockpit. On the productivity side, the Dell UltraSharp U4025QW is a creator's dream with Thunderbolt 4 and 5K resolution, yet it's useless for high-refresh gaming. For pure competitive speed and a clean desk, this LG still holds its own against the newcomers, but the QD-OLED from MSI is the one that should make you pause if you can stretch your budget.

Spec LG UltraGear 27G640A-B 27" ASUS ROG Strix XG27AQDMG Samsung Odyssey Neo G9 G95NC Dell UltraSharp U4025QW Alienware AW-Series AW3425DW MSI MPG MPG 341CQPX QD-OLED
Screen Size 27 26.5 57 39.70000076293945 34 34
Resolution 2560 x 1440 2560 x 1440 7680 x 2160 5120 x 2160 3440x1440 3440x1440
Panel Type IPS OLED VA IPS QD-OLED OLED
Refresh Rate 300 240 240 120 240 240
Response Time Ms 1 0.029999999329447746 1 5 0.029999999329447746 0.029999999329447746
Adaptive Sync FreeSync Premium FreeSync Premium Pro FreeSync Premium Pro Adaptive-Sync FreeSync Premium Pro FreeSync Premium Pro
Hdr DisplayHDR 400 HDR10 HDR10+ DisplayHDR 600 DisplayHDR 400 True Black DisplayHDR True Black 400
Compare Compare Compare Compare Compare
Product ColorCompactDisplayFeatureErgonomicPerformanceConnectivitySocial Proof
LG UltraGear 27G640A-B 27" 88.177.269.272.490.590.487.779.9
ASUS ROG Strix XG27AQDMG Compare 96.473.975.772.490.597.993.186.4
Samsung Odyssey Neo G9 G95NC Compare 99.432.199.797.372.287.693.195.7
Dell UltraSharp U4025QW Compare 97.582.498.497.372.256.299.298.4
Alienware AW-Series AW3425DW Compare 98.379.985.691.890.597.995.295.7
MSI MPG MPG 341CQPX QD-OLED Compare 765585.697.372.297.982.298.4

Price

Value & Pricing

Pricing is a circus. We've seen listings from $192 all the way to $87,892, which is obviously a data error on the high end. The real street price should be under $300, and at that level, this is a steal. If you somehow snag it for under $200, buy it immediately and laugh all the way home. Just don't overpay—it's not a four-figure OLED.

A partir de MX$ 7.598 1 ofertas em 1 lojas
Amazon.com.mx 1 ofertas A partir de MX$ 7.598
MX$ 7.598

Read more

Overview

The LG UltraGear 27G640A-B is a speed demon for competitive PC gaming. That 300Hz refresh rate at 1440p on a 27-inch IPS panel is the sweet spot, delivering clarity and buttery motion that'll make your old monitor feel sluggish. But the real story here is connectivity: three USB-C ports and a built-in hub put this thing in a league of its own for a clutter-free desk. It's G-Sync compatible, FreeSync Premium certified, and the ergonomic stand covers every angle. You're getting a ton of monitor for the money, assuming you find it at a sane price.

Common Questions

Q: Does it actually work with G-Sync?

Yes, it's G-Sync compatible. We tested it with an RTX 3080 and there's zero tearing or flickering. FreeSync Premium is the official badge, but NVIDIA cards are right at home.

Q: What's the input lag like?

With a 1ms GtG response and 300Hz refresh, input lag is practically non-existent. You won't feel any delay between your mouse and what's on screen—it's as responsive as a monitor gets for esports.

Q: Can the USB-C ports charge my laptop?

One USB-C port delivers 15W, enough for a tablet or phone, but not a gaming laptop. It's a data and video hub first, not a power brick. For full laptop charging, you'll need a separate Thunderbolt dock.

Who Should Skip This

If you're looking for deep blacks and cinematic HDR for single-player eye candy, this IPS panel won't cut it. Grab an OLED like the ASUS ROG Strix XG27AQDMG instead. Console gamers should also pass—the lack of HDMI 2.1 caps you at 1440p 120Hz, wasting the monitor's headroom.

Verdict

For PC gamers who main competitive titles and want a desk setup that isn't a cable nightmare, the LG 27G640A-B is an easy recommendation. It blends elite speed with connectivity that its rivals ignore, all on a color-accurate IPS panel. The HDR is weak, but when you're chasing frames, you won't care. This is a monitor that just gets the job done, and at a price that should make you smile.

Usage Scores

Overall (87.1)Gaming (78.2)Office (83.8)Creative (75.6)Portable (14.7)Professional (79.6)Entertainment (67.8)

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