LG UltraGear 27GX790B-B 27" Black 2026
The 27-inch QHD OLED panel pushes a 540Hz refresh rate with a 0.02ms response time, eliminating motion blur for ultra-smooth competitive play. Its Dual Mode instantly switches to 720Hz at 1080p, and Primary RGB Tandem tech boosts brightness to 335 nits for vivid HDR while DisplayPort 2.1 supports the extreme bandwidth. This monitor is best for esports competitors who toggle between sharp 1440p detail and 720Hz speed for split-second reactions.
Screen 27"
Resolution 2560 x 1440
Panel OLED
Refresh 540 Hz
adaptive sync FreeSync Premium Pro
HDR DisplayHDR True Black 500
73 Overall Score
Price MX$19,139
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.
50/100Our AI sentiment read
Based on 2 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 | 540 Hz |
| Adaptive Sync | FreeSync Premium Pro |
Color & HDR
| Brightness | 335 nits |
| Color Gamut | 99.5% DCI-P3 |
| Color Depth | 10-bit |
| HDR | DisplayHDR True Black 500 |
| HDR Support | HDR10 |
Connectivity
| HDMI Ports | 2 |
| DisplayPort | 1 |
| USB-C | 1 |
| 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 | Yes |
| Weight | 6.8 kg / 15.0 lbs |
vs Competition
| Spec | LG UltraGear 27GX790B-B 27" | ASUS ROG Strix XG27AQDMG | MSI MAG 271QPX QD-OLED E2 | Samsung Odyssey OLED G6 G60SF | Gigabyte M Series OLED MO27U2 SA | Dell S2725QC |
|---|---|---|---|---|---|---|
| Screen Size | 27 | 26.5 | 27 | 27 | 27 | 27 |
| Resolution | 2560 x 1440 | 2560 x 1440 | 2560 x 1440 | 2560 x 1440 | 3840 x 2160 | 3840 x 2160 |
| Panel Type | OLED | OLED | QD-OLED | QD-OLED | OLED | IPS |
| Refresh Rate | 540 | 240 | 240 | 500 | 240 | 120 |
| Response Time Ms | - | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 8 |
| Adaptive Sync | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium |
| Hdr | DisplayHDR True Black 500 | HDR10 | DisplayHDR True Black 400 | HDR10+ | DisplayHDR 400 | HDR |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Portability | Display | Feature | User Sentiment | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| LG UltraGear 27GX790B-B 27" | 89.7 | 63.6 | 79.3 | 87.5 | 4.3 | 73.8 | 84.9 | 51.1 |
| ASUS ROG Strix XG27AQDMG Compare | 97.3 | 72.2 | 78.5 | 74.1 | 95.7 | 98.4 | 94.6 | 90.7 |
| MSI MAG 271QPX QD-OLED E2 Compare | 99.2 | 63.6 | 79.3 | 87.5 | 95.7 | 98.4 | 84.9 | 99.4 |
| Samsung Odyssey OLED G6 G60SF Compare | 85.9 | 63.6 | 79.3 | 74.1 | 95.7 | 99.9 | 98.5 | 77.2 |
| Gigabyte M Series OLED MO27U2 SA Compare | 87.3 | 63.6 | 97.9 | 87.5 | 92.9 | 98.4 | 84.9 | 71.6 |
| Dell S2725QC Compare | 77.2 | 79.6 | 90 | 74.1 | 95.7 | 46.2 | 89.9 | 95.5 |
Price
Value & Pricing
From MX$19,139
