DailyTechPricesDevice Comparison
| UltraGear 25G590B | UltraGear OLED 27GX790B | |
|---|---|---|
| LAUNCH DATE | ||
| Announced | 2026, May 19 | 2025, December (launched first in China); shown for North America at CES 2026 |
| Released | 2026-09-01 | 2026-01-06 (US pre-orders open at LG.com) |
| Status | Available | Available |
| ADDITIONAL INFORMATION | ||
| Colors | — | Black |
| Compatibility | — | Tom's Guide (tested with an RTX 5090) notes very few games reach frame rates high enough to use the 540Hz / 720Hz modes |
| Launch Price (USD) | $999.99 (US launch price) | $999.99 (US launch MSRP) |
| Models | 25G590B (25G590B-B) | 27GX790B-B |
| Price in Nigeria | ₦1,400,000 (estimate, converted from US launch price) | ₦1,400,000 (estimate, converted from US launch price) |
| TESTS | ||
| Brightness Measured | — | 249 nits SDR, 561 nits HDR (Tom's Guide) |
| Color Accuracy | — | Delta E 0.33 (Tom's Guide) |
| DESIGN AND BUILD | ||
| Dimensions (with stand) | 571.8 x 511.2 x 207.3 mm | 605.2 x 527.6 x 220 mm (raised) / 605.2 x 397.6 x 220 mm (lowered) |
| Panel Type | IPS | WOLED (4th Gen Primary RGB Tandem OLED) |
| Screen Size | 24.5 inches | 26.5 inches (67.3 cm), 27-inch class |
| Stand Adjustments | Height, tilt, swivel | Tilt / Height / Swivel / Pivot (110 mm height adjustment) |
| VESA Mount | 100 x 100 mm | 100 x 100 mm |
| Weight (with stand) | 5.2 kg | 6.8 kg |
| DISPLAY AND RESOLUTION | ||
| Aspect Ratio | 16:9 | 16:9 |
| Brightness | 400 nits typical (320 nits min) | 335 cd/m² typical (300 cd/m² min); HDR peak 1,500 cd/m² (1.5% APL), 800 cd/m² (10% APL) |
| Color Depth | 8-bit (16.7 million colors) | 1.07 billion colours (10-bit) |
| Color Gamut | 99% DCI-P3 | DCI-P3 99.5% typical (CIE1976); 94% min |
| Contrast Ratio | 1000:1 (typical) | 1,500,000:1 typical (1,200,000:1 min) |
| HDR Support | VESA DisplayHDR 400 | VESA DisplayHDR True Black 500, HDR10, HDR Effect |
| Pixel Density | 0.282 x 0.281 mm pixel pitch | 110 PPI (pixel pitch 0.2292 x 0.2292 mm) |
| Refresh Rate | 1000Hz (native), 1100Hz (overclocked, DisplayPort 2.1) | 540Hz at QHD; 720Hz at HD (Dual Mode) |
| Resolution | 1920 x 1080 pixels | 2560 x 1440 (QHD); HD in 720Hz Dual Mode |
| Response Time | 1ms (GtG) | 0.02ms (GtG) |
| Screen Coating | Low-reflection film, ATW polarizer | Matte anti-glare |
| Viewing Angles | 178° / 178° | 178° (R/L), 178° (U/D) |
| GAMING FEATURES | ||
| Adaptive Sync | AMD FreeSync Premium, NVIDIA G-Sync Compatible | NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro, VRR (48–540Hz range with LFC) |
| Gaming Aids | — | Black Stabilizer, Crosshair, FPS Counter |
| Low Input Lag Mode | — | Dynamic Action Sync (DAS) |
| CONNECTIVITY | ||
| Audio Out | Yes, 4-pole headphone out (sound + mic) | 4-pole headphone jack |
| DisplayPort | 1x DisplayPort 2.1 (UHBR20) | 1x DisplayPort 2.1 with DSC (UHBR13.5) |
| HDMI | 2x HDMI 2.1 | 2x HDMI 2.1 |
| USB Hub | USB Type-C | 2x USB 3.0 downstream (Type-A) |
| USB-C | — | 1x USB-C (DisplayPort Alt Mode, data) |
| POWER | ||
| Power Consumption | 28 W typical | Sleep <0.5W; Off <0.3W |
| Power Supply | — | External power adapter |
| Voltage | 100–240 V AC, 50/60 Hz | 100–240V AC, 50/60Hz |
| EXTRAS AND FEATURES | ||
| Eye Care | Flicker Safe, Reader Mode | Flicker-free, Discomfort Glare Free, Eyesafe 3.0; UL-verified anti-glare, flicker-free, low/reduced blue light and reduced circadian stimulation |
| Other Features | Motion Blur Reduction Pro, AI Scene Optimization, AI Sound; UltraGear emblem RGB lighting | Unity Hexagon RGB lighting; VESA ClearMR 21000; UL 'Perfect Black' and 'Perfect Color' certifications; HW calibration ready; Reader Mode; PiP/PbP; HDMI 2.1 and DisplayPort 2.1 cables in the box |