LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor
Bottom line: The LG 27G640A-B 27-inch Ultragear QHD IPS Gaming Monitor: 300Hz refresh rate for fast-twitch competitive FPS play; main trade-off: displayHDR 400 is entry-level HDR with limited peak brightness.
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Pros & Cons
Pros
- ✓ 300Hz refresh rate for fast-twitch competitive FPS play
- ✓ 27-inch QHD 2560x1440 IPS panel, sharp and detailed
- ✓ 1ms GtG response minimizes ghosting in fast motion
- ✓ G-Sync compatible plus FreeSync Premium for tear-free frames
- ✓ Dual HDMI 2.1, DisplayPort 1.4 and 15W USB-C connectivity
Cons
- ✗ DisplayHDR 400 is entry-level HDR with limited peak brightness
- ✗ USB-C power delivery capped at 15W, won't charge a laptop
- ✗ 95% DCI-P3 falls short of wide-gamut creator displays
- ✗ 300Hz needs DisplayPort 1.4; consoles run well below that
Manufacturer description
Gaming is about to get fast.Experience lightning-fast, crystal-clear gameplay with the 27" QHD IPS UltraGear gaming monitor, built for competitive performance and stunning visuals.A blistering 300Hz refresh rate¹ and 1ms (GtG) response time deliver ultra-smooth motion, while up to 95% DCI-P3 color gamut expression and VESA DisplayHDR 400 bring games to life with incredible contrast and vibrant detail. NVIDIA G-SYNC compatibility and AMD FreeSync Premium ensure tear-free, responsive play.The sleek, design offers swivel, tilt, height, and pivot adjustability for the perfect setup. Plus, stay…
SpecPicks Verdict
SpecPicks scored LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the gaming monitors category. Compare with similarly-priced alternatives in the gaming monitors category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Blazing Speed. Brilliant Color. Total Control. - Dominate the game with a 27" QHD IPS display built for speed, clarity, and precision. Enjoy ultra-smooth action with 300Hz/1ms (GtG), vibrant HDR visuals, and tear-free gameplay—plus pro-level adjustments and versatile ports for your perfect setup.
- 27" QHD IPS Clarity - Enjoy crisp, detailed visuals with QHD (2560x1440) IPS resolution on a vibrant 27" IPS display. Wide viewing angles keep colors vivid from any position, so every scene stays crisp and vibrant.
- Vivid Color and HDR Brilliance - Immerse yourself in lifelike visuals with up to 95% DCI-P3 color gamut and VESA DisplayHDR 400. Enjoy rich hues, bright highlights, and deep dark shadows that make every game more vibrant and every scene more cinematic.
- 300Hz Refresh Rate for the Win - React faster and play smoother with a blistering 300Hz refresh rate—perfect for high-speed competitive gaming where every millisecond counts. Experience fluid motion and razor-sharp clarity, even in the most intense action.
- 1ms (GtG): Astounding Gaming Speed - Play with a near-instantaneous 1ms response time, which minimizes ghosting for gaming visuals that are sharp, clear and buttery smooth.
- Ultimate Frame Sync: FreeSync Premium & G-SYNC Compatible - Say goodbye to screen tearing and stutter. With AMD FreeSync Premium and NVIDIA G-SYNC compatibility, this UltraGear monitor delivers ultra-smooth, tear-free visuals, giving you perfect frame sync across PC and next-gen console gaming.
Full Specifications
| Brand | LG |
|---|---|
| Color | Black |
| Shape | Flat |
| Brightness | 400 candela_per_square_meter |
| Model Name | 27G640A-B.AUSQ |
| Resolution | QHD Wide 1440p |
| Unit Count | 1 Count |
| Color Gamut | 95 |
| Pixel Pitch | 0.23 |
| Screen Size | 27 inches |
| Aspect Ratio | 16:9 |
| Connectivity | USB |
| Display Type | LED |
| Model Number | 27G640A-B.AUSQ |
| Refresh Rate | 300 hertz |
| Adaptive Sync | FreeSync Premium, G-Sync Compatible |
| Compatibility | PC |
| Mounting Type | Wall Mount |
| Response Time | 1 milliseconds |
| Screen Finish | Matte |
| Full listing title | LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor, 300Hz, 1ms, NVIDIA G-Sync, AMD FreeSync Premium, VESA DisplayHDR 400, HDMI 2.1, USB Type-C, Tilt/Height/Swivel/Pivot Stand, Black |
Ready to buy?
LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor, 300Hz, 1ms, NVIDIA G-Sync, AMD FreeSync Premium, VESA DisplayHDR 400, HDMI 2.1, USB Type-C, Tilt/Height/Swivel/Pivot Stand, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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