LG UltraGear 27G640A 27" QHD Gaming Monitor
- 27 in QHD IPS, 2560 x 1440
- 300Hz, 1ms GtG
- DisplayHDR 400, 95% DCI-P3
- USB-C with 15W power delivery, 2 HDMI 2.1, DisplayPort 1.4
- G-Sync compatible, AMD FreeSync
- Height, tilt, swivel, pivot stand
- 1-year warranty
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A very fast QHD IPS gaming monitor with HDR, wide color and a fully adjustable stand. Full speed needs a strong graphics card, and USB-C power is modest.
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ASIN: B0FLLKBNY7Model: 27G640ACategory: Computer Monitors
Overview
Competitive PC gamers get a QHD IPS screen with an extremely high refresh rate and fast response, plus HDR and wide color for single-player games. A fully adjustable stand and USB-C alongside dual HDMI and DisplayPort make setup flexible.
LG balances esports speed with QHD sharpness, which suits shooters and racing games on a strong PC. Reaching the top refresh rate needs a capable graphics card, and the USB-C port supplies only a modest amount of power.
Who it's for
Esports players and fast-game fans with a high-end graphics card get very smooth, sharp motion. Laptop users hoping for one-cable charging should look for higher USB-C power delivery.
Pros and cons
- Extremely high refresh rate
- Wide color with HDR
- Fully adjustable stand
- USB-C plus dual HDMI
- Modest USB-C power output
- Needs a strong graphics card
- Ordinary IPS contrast
Performance notes
Smoothness comes from the very high refresh rate paired with fast pixel response, which limits blur and ghosting. Adaptive sync removes tearing across PC and consoles, and Black Stabilizer brightens dark corners. The IPS panel holds color across wide viewing angles.
Specifications
| Brand | LG |
|---|---|
| Model | 27G640A |
| Dimensions & fit | |
| Screen size | 27 inches |
| Item weight | 12.1 lb |
| Item Dimensions D x W x H | 9.4 x 24.2 x 21.2 inches |
| Height positions | Height, tilt, swivel, pivot |
| Power & efficiency | |
| Power Consumption | 45 watts |
| Construction & materials | |
| Color Gamut | 95% DCI-P3 |
| Compatibility & installation | |
| Hardware Connectivity | USB-C (15W PD), 2 HDMI 2.1, DisplayPort 1.4 |
| Included components | |
| Included Components | DisplayPort cable, HDMI 2.1 cable, power cable |
| Warranty & support | |
| Warranty Description | 1 year manufacturer |
| Other details | |
| Native Resolution | 2560 x 1440 |
| Refresh Rate | 300 Hz |
| Response Time | 1 ms GtG |
| Brightness | 400 cd/m2 |
| Display Technology | IPS |
| Adaptive Sync | AMD FreeSync Premium, G-Sync compatible |
| Contrast Ratio | 1300:1 |
| Viewing Angle | 178 degrees |
| Additional Features | Built-in speakers, Dynamic Action Sync, Black Stabilizer, FPS Counter, Crosshair |
| HDR certification | VESA DisplayHDR 400, HDR10 |
Frequently asked questions
What do I need to run the LG 27G640A-B at full refresh?
LG says a graphics card supporting DisplayPort 1.4 or HDMI 2.1 is required to reach 300Hz. G-SYNC Compatible works on GeForce GTX 10 Series and higher over DisplayPort, and RTX 30 Series and higher over HDMI 2.1.
Which cables come with the LG 27G640A-B?
A DisplayPort cable, an HDMI 2.1 cable and a power cable.
Can the LG 27G640A-B be wall mounted?
The mounting type is listed as wall mount, though the VESA pattern is not given.