LG UltraGear 27GX790A-B 27" Black 2025
The 27-inch 1440p OLED panel achieves a 480Hz refresh rate with a 0.03ms response time, delivering motion clarity that rivals esports-grade TN displays without sacrificing per-pixel contrast. Future-ready DisplayPort 2.1 connectivity and a 98.5% DCI-P3 gamut with DisplayHDR True Black 400 ensure both competitive speed and vivid image quality. This monitor is best for competitive FPS and esports players who demand the highest frame rate fluidity and instant pixel response from a high-resolution OLED screen.
Screen 27"
Resolution 2560 x 1440
Panel OLED
Refresh 480 Hz
response time ms 0.029999999329447746
adaptive sync FreeSync Premium Pro
HDR DisplayHDR True Black 400
95 Overall Score
Price £0
Snapshot
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Owner sentiment has held steady over time
92/100Our AI sentiment read
Based on 19 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Display
| Size | 27" |
| Resolution | 2560x1440 (QHD) |
| Panel Type | OLED |
| Aspect Ratio | 16:9 |
| Curved | No |
Performance
| Refresh Rate | 480 Hz |
| Response Time | 0.03 |
| Adaptive Sync | FreeSync Premium Pro |
Color & HDR
| Brightness | 275 nits |
| Color Gamut | 98.5% DCI-P3 |
| Color Depth | 10-bit |
| HDR | DisplayHDR True Black 400 |
| HDR Support | HDR10 |
Connectivity
| HDMI Ports | 2 |
| DisplayPort | 1 |
| USB-C | 3 |
| Speakers | No |
| Headphone Jack | Yes |
Ergonomics
| Height Adjustable | Yes |
| Tilt | Yes |
| Swivel | Yes |
| Pivot | Yes |
| VESA Mount | 100x100 |
Features
| Webcam | No |
| Touchscreen | No |
| PIP/PBP | No |
| Weight | 9.3 kg / 20.5 lbs |
vs Competition
| Spec | LG UltraGear 27GX790A-B 27" | ASUS ROG Strix XG27UCDMG | MSI MAG 271QPX QD-OLED E2 | Samsung Odyssey G60SD | Gigabyte M Series OLED MO27U2 SA | Apple Studio Display XDR 27" |
|---|---|---|---|---|---|---|
| Screen Size | 27 | 27 | 27 | 27 | 27 | 27 |
| Resolution | 2560 x 1440 | 3840 x 2160 | 2560 x 1440 | 2560 x 1440 | 3840 x 2160 | 5120 x 2880 |
| Panel Type | OLED | OLED | QD-OLED | QD-OLED | OLED | Mini-LED |
| Refresh Rate | 480 | 240 | 240 | 360 | 240 | 120 |
| Response Time Ms | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | - |
| Adaptive Sync | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | Adaptive-Sync |
| Hdr | DisplayHDR True Black 400 | DisplayHDR True Black 400 | DisplayHDR True Black 400 | HDR10+ | DisplayHDR 400 | HDR |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Portability | Display | Feature | User Sentiment | Ergonomic | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| LG UltraGear 27GX790A-B 27" | 83 | 63.3 | 79.4 | 73.8 | 95.4 | 91.9 | 99.8 | 98.4 | 99.4 |
| ASUS ROG Strix XG27UCDMG Compare | 96.6 | 63.3 | 97.9 | 87.2 | 99 | 91.9 | 98.4 | 84.9 | 99.4 |
| MSI MAG 271QPX QD-OLED E2 Compare | 99.2 | 63.3 | 79.4 | 87.2 | 95.4 | 91.9 | 98.4 | 84.9 | 99.4 |
| Samsung Odyssey G60SD Compare | 92.3 | 46.5 | 79.4 | 73.8 | 95.4 | 91.9 | 99.7 | 89.9 | 95.4 |
| Gigabyte M Series OLED MO27U2 SA Compare | 87.1 | 63.3 | 97.9 | 87.2 | 92.5 | 91.9 | 98.4 | 84.9 | 70.7 |
| Apple Studio Display XDR 27" Compare | 99.7 | 83 | 99.4 | 95.7 | 74.5 | 70.8 | 58.2 | 91.9 | 66.7 |
