Asus has officially unveiled the ROG Swift PG27UCWM, a 26.5-inch (27-inch class) gaming monitor built on LG Display’s new fourth-generation Tandem WOLED panel. The display will be shown publicly at CES and is one of the first 27-inch 4K OLED gaming screens to use an RGB-stripe sub-pixel layout.
The panel offers a 3840 x 2160 (“4K”) resolution and an estimated pixel density of around 166 pixels per inch, aimed at delivering sharp text and detailed images. The switch to an RGB-stripe layout, instead of earlier WOLED designs that used an additional white sub-pixel, is intended to improve clarity and colour accuracy.
The ROG Swift PG27UCWM supports a native 240Hz refresh rate, with a dual-mode option that increases the refresh rate to 480Hz when the resolution is reduced to 1920 x 1080. Adaptive-sync support enables variable refresh rate (VRR) on compatible PCs and consoles.
Key technical specifications include a quoted 0.03ms grey-to-grey response time, 99% DCI-P3 colour gamut coverage, 10-bit colour depth and factory calibration with a stated colour accuracy of deltaE < 2. The panel is expected to meet the VESA DisplayHDR 500 True Black certification level, and Asus lists support for both Dolby Vision and HDR10 content.
Brightness figures have not been published by Asus, but LG Display’s panel data indicates the following capabilities:
- 250 nits for SDR content
- Up to 1000 nits peak brightness for HDR at 1.5% APL (windowed highlight)
- 500 nits at 10% APL
- 250 nits at 100% APL (full-screen)
Because the panel uses only RGB sub-pixels, it relies on an additive approach to colour brightness. This should help maintain saturation at higher luminance levels and increase overall colour volume in HDR scenes, compared with earlier WOLED designs that used a white sub-pixel to boost brightness but could desaturate colours. Asus claims up to 27% greater colour volume at high brightness levels, targeting more vivid HDR visuals for gaming.
The monitor debuts a refreshed ROG design similar to recent Asus OLED models, but in a black finish. It incorporates the company’s OLED Care Pro features aimed at mitigating image retention, as well as a Neo Proximity Sensor that can adjust behaviour based on user presence.
Connectivity includes one DisplayPort 2.1a (UHBR20) and one USB-C port with DisplayPort Alt Mode and up to 90W power delivery for laptops. HDMI 2.1 is also supported for modern consoles and high-bandwidth sources. While not yet confirmed by Asus, features such as an integrated KVM switch and picture-by-picture / picture-in-picture modes are expected to align with other recent ROG OLED displays.
Pricing and release timing for the ROG Swift PG27UCWM have not yet been announced. More details are anticipated during CES.