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LG 27G640A-B — Review & Specs | Pricepect | Pricepect

Home Gaming MonitorsLG 27G640A-B

LG 27G640A-B — image 1

LG

LG 27G640A-B

Expert Review Analysis

The LG 27G640A is a 27‑inch UltraGear QHD IPS gaming monitor featuring a blistering 300 Hz refresh rate, 1 ms GtG response, and HDR400 with a 95% DCI‑P3 color gamut, aimed at competitive gamers who demand ultra‑smooth visuals and color accuracy.

✓ Best for: Competitive gamers and esports enthusiasts who need ultra‑high refresh rates on QHD resolution, especially for fast‑paced FPS titles like Valorant or CS:GO, and who have a powerful GPU capable of driving 300 Hz.✗ Not ideal for: Casual users or those with mid‑range graphics cards who cannot sustain 300 Hz, as well as consumers seeking built‑in audio or detailed brightness specifications for HDR content.

Pros

✓300 Hz refresh rate delivers ultra‑smooth motion for competitive gaming
✓1 ms gray‑to‑gray response time minimizes ghosting and input lag
✓95% DCI‑P3 color gamut and VESA DisplayHDR 400 provide vivid, high‑contrast visuals

Best Seller Rank History

Now#185Best#88Worst#3,173 +289

Lower = better sales rank

Rating Trend

Rating4.4/ 5Reviews126+104 reviews +0.20

Specifications

Connectivity

HDMI Ports2 (HDMI 2.1)

DisplayPort Ports1 (DisplayPort 1.4)

USB Type-C1 (PD 15W)

Design

Height21.2 inches mm

Width24.2 inches mm

Depth9.4 inches mm

Weight5.5 kg g

Display

Screen Size27 inches mm

Resolution2560 x 1440

Panel TypeIPS

Aspect Ratio16:9

Refresh Rate300 Hz Hz

Features

Adaptive SyncAMD FreeSync Premium, NVIDIA G-SYNC Compatible

Ergonomic AdjustmentsHeight, Tilt, Swivel, Pivot adjustable

Black StabilizerEnabled

Dynamic Action SyncEnabled

VESA Mount100 x 100 mm

General

BrandLG

Model27G640A-B

ColorBlack

Warranty1 Year Manufacturer

Release Date2025-08-05

Lighting

Lighting TypeHexagon lighting

Performance

Response Time1 ms (GtG) ms

Power

USB Power Delivery15W W

Compatibility

Graphics Card RequirementDP 1.4 or HDMI 2.1 needed for 300 Hz

HDR

VESA DisplayHDRHDR 400

VRR

Variable Refresh RateAMD FreeSync Premium + NVIDIA G‑Sync Compatible

Ergonomics

Stand AdjustabilityHeight, tilt, swivel, and pivot adjustable

Dimensions & Weight

Height21.2 inches

Width24.2 Inches

Depth9.4 inches

Weight12.1 pounds

Research Sources

microcenter.com

bhphotovideo.com

displayspecifications.com

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User Reviews

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4.3

(110 reviews)

$276.50$296.997% off

27G640A-B.AUSQBlack27G640A-B 1 Year Manufacturer

Gaming Monitors Computer Monitors

✓

Dual HDMI 2.1 ports and DisplayPort 1.4 offer versatile high‑bandwidth connectivity

✓Fully adjustable stand with height, tilt, swivel, and pivot enhances ergonomics

✓USB‑C port supplies 15 W power delivery for convenient cable management

Cons

✗Achieving the full 300 Hz refresh rate requires a high‑end GPU with DP 1.4 or HDMI 2.1 support
✗Brightness and contrast specifications are not disclosed, making HDR performance uncertain
✗No built‑in speakers, requiring external audio solutions for sound
✗Limited professional review data makes performance claims harder to verify
✗Package weight up to 7.5 kg may be cumbersome for frequent relocation

Expert Opinion

Professional reviewers and editors have not published detailed tests for the LG 27G640A yet; product listings and retailer descriptions highlight its 300 Hz speed, HDR400 support, and dual adaptive‑sync technologies as primary strengths, but the lack of independent benchmarks leaves some performance claims unverified.

How It Compares

vs. Samsung Odyssey G6

Advantages

✓Higher 360 Hz refresh rate provides marginally smoother motion
✓Curved display may enhance immersion for some gamers

Disadvantages

✗Heavier and bulkier, making desk placement more challenging
✗Often lacks the same level of ergonomic adjustability as LG

Choose the LG 27G640A for better ergonomics and USB‑C convenience; opt for the Odyssey G6 if the absolute highest refresh rate and curvature are top priorities.

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