ASUS ROG Swift OLED PG27UCWM — 4K 240Hz OLED with a 480Hz Dual Mode
4K Tandem RGB OLED240Hz · 480Hz FHDDP 2.1 UHBR20USB-C 90W PD
The ASUS ROG Swift OLED PG27UCWM is a 27-inch class (26.5") 4K UHD gaming monitor with a Tandem RGB OLED panel, running 3840 x 2160 at 240Hz or switching to Full HD at 480Hz in Dual Mode, with 0.03ms GtG response.
The tandem OLED structure stacks emissive layers for higher brightness and longer panel life than single-layer OLEDs, reaching 1000 nits HDR peak with VESA DisplayHDR 400 True Black and Dolby Vision support. Colour covers 99% DCI-P3 in 10-bit with ΔE under 2. DisplayPort 2.1 (UHBR20) carries 4K 240Hz without compression on supported cards, and a USB-C port with 90W power delivery plus a 3-port USB hub turns it into a single-cable laptop station.
Before you order: The TrueBlack Glossy surface gives the deepest blacks but reflects bright light sources behind you. There are no built-in speakers. For 4K 240Hz without DSC you need a graphics card with DisplayPort 2.1 UHBR20.
What's in the Box
- ASUS ROG Swift OLED PG27UCWM monitor with stand
- DisplayPort 2.1 cable
- HDMI Ultra High Speed cable
- USB-C cable
- USB 3.2 cable
- Power cord
- VESA mount kit
- Microfiber cloth
- ROG pouch and sticker
- Quick start guide and warranty card
What It Means in Practice
- Dual Mode lets you play esports titles at FHD 480Hz and switch back to 4K 240Hz for everything else.
- Connect a laptop with the supplied USB-C cable for video, USB hub and up to 90W charging on one cable.
- ASUS OLED Care Pro and the Neo Proximity Sensor dim the panel when you step away, protecting it during work.
- Two HDMI 2.1 inputs suit PS5 and Xbox Series X at 4K 120Hz.
What Will Not Work
- No built-in speakers — use the earphone jack.
- Glossy surface — not ideal facing windows or strong lamps.
- 4K at 240Hz demands a high-end graphics card; mid-range cards will run lower frame rates.
- No DisplayHDR 1000 certification — HDR is certified at DisplayHDR 400 True Black.
Key Features
Tandem RGB OLED
4K UHD with 1,500,000:1 contrast, 99% DCI-P3 and 1000 nits HDR peak.
240Hz / 480Hz Dual Mode
4K at 240Hz or FHD at 480Hz with 0.03ms GtG.
DP 2.1 & HDMI 2.1
DisplayPort 2.1 UHBR20 plus two 48Gbps HDMI 2.1 inputs.
Laptop-ready USB-C
USB-C DP Alt mode with 90W PD and a 3-port USB 3.2 hub.
Technical Specifications
| Identification |
| Part Number |
90LM0CY1-B01971 |
| EAN / GTIN |
4711636505857 |
| Brand |
ASUS |
| Model |
ROG Swift OLED PG27UCWM |
| Display |
| Screen size |
26.5" (27" class), 16:9 |
| Panel |
Tandem RGB OLED (WOLED), TrueBlack Glossy |
| Resolution |
3840 x 2160 (4K UHD) |
| Refresh rate |
240Hz at 4K · 480Hz at FHD (Dual Mode) |
| Response time |
0.03ms GtG |
| Brightness |
250 cd/m² typical · 1000 cd/m² HDR peak |
| Contrast |
1,500,000:1 |
| Colour gamut |
99% DCI-P3 · 130% sRGB · 10-bit · ΔE < 2 |
| HDR |
VESA DisplayHDR 400 True Black · HDR10 · Dolby Vision |
| Adaptive sync |
FreeSync Premium Pro · G-SYNC Compatible · VESA AdaptiveSync |
| Panel care |
OLED Care Pro · Neo Proximity Sensor · TÜV Flicker-free |
| Connectivity |
| Video inputs |
1x DisplayPort 2.1 (UHBR20) · 2x HDMI 2.1 (48Gbps FRL) · 1x USB-C (DP Alt) |
| USB-C power delivery |
90W |
| USB hub |
3x USB 3.2 Gen1 Type-A |
| Audio |
Earphone jack (no speakers) |
| Ergonomics & mounting |
| Height adjustment |
0–110 mm |
| Tilt / swivel / pivot |
+20° / -5° · ±30° · ±90° |
| VESA |
100 x 100 mm |
| Power & physical |
| Power consumption |
< 50W |
| Dimensions with stand |
606 x 548 x 256 mm |
| Weight |
8.1 kg with stand (est.) |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
3 years including panel burn-in per ASUS — claims handled through Singular |
Frequently Asked Questions
What is Dual Mode?
A switch between 4K at 240Hz and Full HD at 480Hz, so you can trade resolution for extreme refresh in competitive games.
Is burn-in covered?
ASUS lists a 3-year warranty that includes OLED panel burn-in for this model.
Can I charge my laptop from it?
Yes, the USB-C port supplies up to 90W while carrying video and the USB hub.
Singular Expert Insight · Buyer's Guide
The PG27UCWM is a flagship 27-inch OLED that genuinely does two jobs: a razor-sharp 4K 240Hz screen for AAA games and creative work, and a 480Hz esports display at the press of a button. Its USB-C 90W makes it equally at home on a laptop desk. To make full use of 4K 240Hz, see our
graphics cards.
✓ Buy it if you want the best of 4K OLED gaming with a 480Hz esports mode and single-cable laptop docking.
✕ Skip it if your room is very bright, you need speakers, or your graphics card cannot drive 4K at high frame rates.
→ Also consider the ASUS ROG Swift OLED PG27AQWP-G EDITION 20 for QHD at 540Hz.
Not sure which cable or GPU you need for 4K 240Hz? Send us your PC specs and we will advise before you order.