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Full specifications
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LAUNCH DATE3 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Announced | 2025, December (launched first in China); shown for North America at CES 2026 | 2025, January 2 (ahead of CES 2025) |
| Released | 2026-01-06 (US pre-orders open at LG.com) | 2025-01-21 |
| Status | Available | Available |
ADDITIONAL INFORMATION7 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| 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 | Full 4K 240Hz over DisplayPort 2.1a UHBR20 needs a DP 2.1-capable GPU; 2x HDMI 2.1 (FRL) for consoles |
| Environmental | — | FSC MIX certified packaging |
| In the Box | — | DisplayPort 2.1 (DP80) cable, DisplayPort cable, HDMI Ultra High Speed cable, USB 3.2 cable, USB-C cable, power cord, VESA mount kit, ROG pouch, microfiber cloth, ROG sticker, quick start guide, warranty card |
| Launch Price (USD) | $999.99 (US launch MSRP) | $1,099 (US MSRP per ASUS availability press release) |
| Models | 27GX790B-B | PG27UCDM |
| Price in Nigeria | ₦1,400,000 (estimate, converted from US launch price) | ₦1,538,600 (estimate, converted from US launch price) |
TESTS4 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Brightness Measured | 249 nits SDR, 561 nits HDR (Tom's Guide) | 445 nits SDR, 25% window (Tom's Hardware) |
| Color Accuracy | Delta E 0.33 (Tom's Guide) | — |
| Input Lag | — | 18 ms total input lag (Tom's Hardware) |
| Response Time Measured | — | 4 ms screen draw time at 240Hz (Tom's Hardware) |
DESIGN AND BUILD8 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Dimensions (with stand) | 605.2 x 527.6 x 220 mm (raised) / 605.2 x 397.6 x 220 mm (lowered) | 61.03 x 54.95 x 21.88 cm (24.03" x 21.63" x 8.61") |
| Dimensions (without stand) | — | 61.03 x 36.92 x 7.05 cm (24.03" x 14.54" x 2.78") |
| Panel Type | WOLED (4th Gen Primary RGB Tandem OLED) | QD-OLED (4th-generation, listed by ASUS as Tandem QD-OLED) |
| Screen Size | 26.5 inches (67.3 cm), 27-inch class | 26.5 inches (marketed as 27-inch) |
| Stand Adjustments | Tilt / Height / Swivel / Pivot (110 mm height adjustment) | Tilt +20° ~ -5°, Swivel +30° ~ -30°, Pivot +90° ~ -90°, Height 0~110mm |
| VESA Mount | 100 x 100 mm | 100x100mm |
| Weight (with stand) | 6.8 kg | 7.62 kg (16.80 lbs) |
| Weight (without stand) | — | 4.97 kg (10.96 lbs) |
DISPLAY AND RESOLUTION13 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Aspect Ratio | 16:9 | 16:9 |
| Brightness | 335 cd/m² typical (300 cd/m² min); HDR peak 1,500 cd/m² (1.5% APL), 800 cd/m² (10% APL) | 1,000 cd/m² (HDR, peak) |
| Color Depth | 1.07 billion colours (10-bit) | 10-bit (1073.7M colors) |
| Color Gamut | DCI-P3 99.5% typical (CIE1976); 94% min | 99% DCI-P3, 145% sRGB |
| Contrast Ratio | 1,500,000:1 typical (1,200,000:1 min) | 1,500,000:1 (typical) |
| Factory Calibration | — | ΔE < 2, with Color Calibration E-report |
| HDR Support | VESA DisplayHDR True Black 500, HDR10, HDR Effect | VESA DisplayHDR 400 True Black, HDR10, Dolby Vision |
| Pixel Density | 110 PPI (pixel pitch 0.2292 x 0.2292 mm) | 166 ppi (pixel pitch 0.153 mm) |
| Refresh Rate | 540Hz at QHD; 720Hz at HD (Dual Mode) | 240 Hz |
| Resolution | 2560 x 1440 (QHD); HD in 720Hz Dual Mode | 3840 x 2160 (4K UHD) |
| Response Time | 0.02ms (GtG) | 0.03 ms (GTG) |
| Screen Coating | Matte anti-glare | Anti-reflection |
| Viewing Angles | 178° (R/L), 178° (U/D) | 178° / 178° (CR≧10) |
GAMING FEATURES3 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Adaptive Sync | NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro, VRR (48–540Hz range with LFC) | AMD FreeSync Premium Pro, NVIDIA G-SYNC Compatible, VESA AdaptiveSync Display 240Hz |
| Gaming Aids | Black Stabilizer, Crosshair, FPS Counter | GamePlus, GameVisual, Shadow Boost, Extreme Low Motion Blur (ELMB) |
| Low Input Lag Mode | Dynamic Action Sync (DAS) | GameFast Input technology |
CONNECTIVITY6 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Audio Out | 4-pole headphone jack | Earphone jack |
| DisplayPort | 1x DisplayPort 2.1 with DSC (UHBR13.5) | 1x DisplayPort 2.1a (UHBR20, up to 80Gbps) |
| Ethernet / KVM | — | Built-in KVM switch |
| HDMI | 2x HDMI 2.1 | 2x HDMI 2.1 (FRL) |
| USB Hub | 2x USB 3.0 downstream (Type-A) | 3x USB 3.2 Gen 1 Type-A |
| USB-C | 1x USB-C (DisplayPort Alt Mode, data) | 1x USB-C with DP Alt Mode and 90W Power Delivery |
POWER3 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Power Consumption | Sleep <0.5W; Off <0.3W | <80W (power saving mode <0.5W, power off <0.3W) |
| Power Supply | External power adapter | — |
| Voltage | 100–240V AC, 50/60Hz | 100-240V, 50/60Hz |
EXTRAS AND FEATURES3 fields
| Specification | UltraGear OLED 27GX790B | ROG Swift OLED PG27UCDM |
|---|---|---|
| Eye Care | Flicker-free, Discomfort Glare Free, Eyesafe 3.0; UL-verified anti-glare, flicker-free, low/reduced blue light and reduced circadian stimulation | Flicker-free; TÜV Flicker-free and TÜV Low Blue Light (Hardware Solution) certified; OLED Anti-Flicker 2.0 |
| Other Features | 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 | ASUS OLED Care Pro with Neo Proximity Sensor, Aura Sync lighting, DisplayWidget Center, tripod socket (1/4"), Kensington lock |
| Warranty | — | 3 years (including panel burn-in) |