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Black 27 inch flat IPS gaming monitor on height adjustable stand with thin bezels

LG Electronics

LG Electronics 27G640A-B 27" 300Hz gaming monitor

SKU CH-NTEX-VX72T MPN 27G640A-B

A 27-inch QHD IPS gaming monitor with a 300Hz refresh rate, 1ms response time, and 95% DCI-P3 colour coverage for competitive play

  • Screen size27 in (68.6 cm)
  • Display resolution2560 × 1440 (2K)
  • Refresh frequency300 Hz
  • Panel typeIPS
  • Pixel response time1 ms
  • HDR formatHDR10

Refresh rate 300Hz

  • Ultra-smooth competitive play driven by a 300Hz refresh rate and 1ms response time
  • Sharp lifelike detail from a 27-inch 2560 x 1440 IPS panel with 178° viewing angles
  • Cinematic colour depth via 95% DCI-P3 coverage and VESA DisplayHDR 400 certification
  • Tear-free gaming enabled by AMD FreeSync Premium and NVIDIA G-SYNC compatibility
  • Ergonomic comfort with height, tilt, swivel and pivot adjustments on a frameless design

27-inch QHD 300Hz Gaming Monitor

The LG UltraGear 27G640A-B is a 27-inch IPS gaming monitor with a 2560 x 1440 resolution and a 300Hz refresh rate. It delivers a 1ms GtG response time and covers 95% of the DCI-P3 colour gamut with VESA DisplayHDR 400 certification. The flat panel offers 400 cd/m² brightness and a 1300:1 contrast ratio for vivid visuals.

Competitive Players Seeking Speed

This monitor suits esports enthusiasts and competitive gamers who need ultra-high refresh rates and low input lag for fast-paced titles. The wide 178° viewing angles and factory colour calibration benefit content creators working in sRGB or DCI-P3 workflows. Users prioritising deep blacks for dark-room media consumption may prefer a VA or OLED panel instead.

Straightforward Setup with Full Ergonomic Adjustment

The included stand provides height, tilt, swivel, and pivot adjustments for quick ergonomic alignment without tools. Connectivity includes two HDMI 2.1 ports, one DisplayPort 1.4, and a USB-C port with 15W power delivery plus two USB 3.0 downstream ports. Ensure your graphics card supports DSC over DisplayPort 1.4 to reach the full 300Hz at QHD resolution.

How it compares

Measured against everything we stock in Monitors for Gamers, at today’s prices. Recalculated every night.

Price $317.99
Pricier than about 72% of the 839 comparable items (median $189.99).
Screen size 27 in (68.6 cm)
Typical for this category: the median of 814 items is 27 in.
Refresh frequency 300 Hz
Higher than about 90% of the 735 comparable items (median 180 Hz).

Specifications

Product
Brand nameLG
Product lineUltraGear
Model name27G640A-B
Part number27G640A-B
Case colorBlack
Display
Screen size27 in (68.6 cm)
Display resolution2560 × 1440 (2K)
Refresh frequency300 Hz
Panel typeIPS
Pixel response time1 ms
HDR formatHDR10
Image brightness400 cd/m2
Screen curvatureFlat Panel
Widescreen formatYes
Variable refresh rateFreeSync Premium & G-Sync Compatible
Viewing angles178° (H) / 178° (V)
Screen ratio16:9
Contrast1,300:1
Color gamut coverageDCI P3 95% (CIE1976)
Colors displayed1.07 Billion
Pixel pitch0.2328 mm
DisplayHDR certificationDisplayHDR 400
Audio & video
Integrated speakersYes
Integrated webcamNo
HDCP compatibilityYes
Ports & slots
HDMI ports2 x HDMI 2.1
DisplayPort connectors1 x DisplayPort 1.4
Video connectors1 x DisplayPort 1.4 / 1 x USB-C (DP Alternative) / 2 x HDMI 2.1
USB connections1 x USB 3.0 Upstream / 1 x USB Type-C / 2 x USB 3.0 Type-A Downstream
Headphone jackYes
Power
Power drawPower Save/Sleep Mode (Max): Less than 0.5 W
DC Off (Max): Less than 0.3 W
Power supply100–240 VAC, 50/60 Hz
Size & build
Stand adjustabilityHeight, Pivot, Swivel, Tilt
VESA mounting pattern100 × 100 mm
Product dimensions15.3 in-21.2 in × 24.2 in × 9.4 in with stand
14.4“ × 24.2 in × 2.3 in without stand
Product weight12.1 lb with stand
7.5 lb without stand
Shipping weight10.09 kg
Package size808 × 457 × 152 mm

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