ASUS ROG Strix XG27UCGR Review: 4K and 485 Hz in a Single Monitor

Two monitors in one chassis—that’s the simplest way to sum up the concept behind the ASUS ROG Strix XG27UCGR. This second-generation 27-inch model is what’s known as a dual-mode monitor: At the touch of a button, it switches between razor-sharp 4K at 162 Hz and a Full HD mode with up to 485 Hz. We’ll find out if it’s worth it in our ASUS ROG Strix XG27UCGR review.

Technical Specifications of the ASUS ROG Strix XG27UCGR

Model	ASUS ROG Strix XG27UCG Gen2 (XG27UCGR)
Screen Diagonal	27 inches (68.58 cm)
Panel Type	Fast IPS, matte
Aspect ratio	16:9
Resolution (4K mode)	3,840 × 2,160 pixels at up to 162 Hz
Resolution (Dual Mode)	1,920 × 1,080 pixels at up to 485 Hz
Response time	0.3 ms (GtG, min.) / 1 ms (GtG)
Brightness	400 cd/m² (manufacturer’s specification)
HDR	VESA DisplayHDR 400
Color gamut	95% DCI-P3, 130% sRGB
Adaptive Sync	NVIDIA G-Sync compatible, AMD FreeSync
Motion Features	ELMB Sync, Variable Overdrive
Ports	1× DisplayPort 1.4 (DSC), 1× HDMI 2.1, 1× USB-C (DP Alt Mode)
USB-C	DisplayPort Alt Mode including power delivery (up to 15 W)
Audio	1× 3.5-mm jack (headphones)
Ergonomics	Height (110 mm), Tilt (-5°/+20°), Swivel (±40°), Pivot (±90°)
VESA mount	100 × 100 mm
Special Features	Dual-mode switch, Smart Pixel, DisplayWidget Center, ROG AI features
Price	€ 399.90 *

ASUS ROG Strix XG27UCGR Review: Appealing Design, Impeccable Build Quality

Visually, ASUS stays true to itself: The ROG Strix XG27UCGR features a understated matte black finish and largely avoids flashy gaming aesthetics. From the front, the nearly frameless panel with narrow bezels on three sides dominates the design. Only at the bottom is there a slightly wider bezel featuring the subtle ROG logo. The signature Republic of Gamers aesthetic, with its striking lines, is most evident on the back, where ASUS plays with textured and flat design elements. You won’t find any garish RGB lighting here, which gives the monitor a sophisticated look.

Plastic is the primary material used. The gaps are cleanly finished, and the chassis makes a neat and cohesive impression overall. For users who want to use the monitor not only for gaming but also for work or in a tidy setup, this understated design is a clear plus: The ASUS ROG Strix XG27UCGR fits just as well in a gaming room as it does on a home office desk and features absolutely top-quality craftsmanship.

The included stand covers the full range of ergonomic options and leaves little to be desired in this regard. The height can be adjusted by up to 110 mm, plus there’s a tilt range of -5° to +20°, a swivel range of ±40°, and a 90-degree pivot to portrait mode. This means virtually anyone can find a comfortable seating position, and quickly adjusting the monitor for a neighbor or reconnecting cables is a breeze without any awkward contortions.

The adjustment mechanisms operate smoothly and provide a secure hold for the panel. Those who prefer to mount the screen on a wall or a monitor arm can use the standardized 100 × 100 mm VESA mount. This makes the ASUS suitable for virtually any desk setup: from a classic gaming setup to a space-saving dual-monitor configuration.

Specifications and Features

At the heart of the ASUS ROG Strix XG27UCGR is the Dual-Mode feature. We’re already familiar with a similar version of this from the ASUS ROG Strix 5K XG27JCG (our review), which is a step above this model in terms of resolution (and price). In native 4K mode, the 27-inch monitor delivers 3,840 × 2,160 pixels at up to 162 Hz. Ideal for titles where sharp detail and a smooth desktop display are essential. By switching settings in the menu, the monitor can be set to Full HD mode, boosting the refresh rate to up to 485 Hz.

This makes it a compelling choice for esports games.  For competitive shooters like Valorant, CS2, or Apex Legends, it’s precisely this speed that counts, while the lower resolution makes it easier to achieve the necessary frame rate. To ensure the sharper image doesn’t look too grainy even in FHD mode, ASUS relies on Smart Pixel technology, which enhances the image.

On the gaming side, it also features ELMB Sync to reduce motion blur, variable Overdrive control, and the usual ROG features: an on-screen crosshair, shadow enhancement for dark game scenes, and other AI-powered image functions. The combination of G-Sync compatibility and FreeSync ensures smooth, stutter-free visuals.

When it comes to ports, ASUS keeps things up-to-date but manageable: DisplayPort 1.4 with Display Stream Compression, an HDMI 2.1 port for current-generation consoles, and a USB-C port with DisplayPort Alt Mode. However, the USB-C port only delivers up to 15 watts, making it more suitable for charging smaller devices than for powering a laptop. The monitor does not come with a standard USB hub—a point that budget-conscious buyers should keep in mind.

Controls and OSD

The ASUS is controlled via an on-screen display that can be conveniently navigated using a joystick on the back. This is significantly more user-friendly than the convoluted button layouts found on some competing models and allows for quick adjustments to Overdrive, brightness, or picture mode. Switching between 4K and Full HD is one of the core functions and is prominently accessible.

In addition, ASUS offers the DisplayWidget Center software, which allows you to conveniently adjust settings directly on your PC—without having to go through the monitor’s menu. This saves a noticeable amount of time, especially for those who frequently switch between profiles for work and gaming. The OSD has the clean, well-organized look typical of ASUS, making navigation through the menus completely intuitive.

Image Quality of the ASUS ROG Strix XG27UCGR

The XG27UCGR lays the foundation for a great picture: According to ASUS, the Fast-IPS panel covers 95% of the DCI-P3 color space and 130% of the sRGB space, and is VESA DisplayHDR 400 certified. Combined with the 4K resolution, this results in a pixel density of around 163 ppi on a 27-inch screen, rendering fonts, textures, and menus with crisp clarity. The matte finish reliably keeps reflections at bay.

The most exciting aspect of the dual-mode concept is, of course, the direct comparison of both modes—and this is precisely where the big difference becomes apparent. In native 4K mode, the image appears razor-sharp, edges are clean, and small text remains easily readable. When you switch to Full HD to take full advantage of the 485 Hz refresh rate, the display on the 27-inch screen becomes noticeably coarser: 1,920 × 1,080 pixels have to be spread across the same area, causing fine details to lose definition. The manufacturer can’t be blamed for this, though—it’s simply due to the resolution. But ASUS has thought this through.

This is where Smart Pixel technology comes into play, which upscales the Full HD signal in three stages. In practice, the medium to high settings in particular deliver a visible improvement and significantly mitigate the loss of resolution. However, the upscaled FHD mode doesn’t quite match the native 4K sharpness. For competitive shooters, where reaction time matters more than detail accuracy anyway, this compromise is generally easy to live with.

162 Hz in 4K mode is, of course, an absolutely solid rate that allows for flawless gameplay even in fast-paced games. The additional jump from 160 to 485 Hz in Full HD mode is subjectively less noticeable. Here, we’re talking about subtle differences that are appreciated primarily by experienced competitive gamers.

Lab Test of the XG27UCGR

For an IPS panel, the ASUS ROG Strix XG27UCGR offers decent color reproduction with a vibrant but not oversaturated look. The 95% DCI-P3 coverage is more than sufficient for vibrant gaming worlds and everyday work.

For color-critical professional work, prior calibration would be advisable. The contrast is at the level typical for IPS panels: don’t expect deep, rich blacks like those found on VA or OLED panels.

The same applies to HDR: The DisplayHDR 400 certification marks the entry-level class. Without local dimming (Local Dimming Zones), the effect in HDR content remains subtle. Bright highlights stand out only slightly from the rest. So HDR here is more of a nice extra than a real selling point. In SDR mode, however—which is what most games and applications are designed for anyway—the panel really shows off its strengths.

As with many IPS displays, the backlighting isn’t perfectly uniform across the entire surface: the monitor is brightest toward the center of the screen, with brightness decreasing slightly toward the edges and corners. On large areas of solid-color content—such as a white document or a gray background—slight differences in brightness and color may become noticeable as a result. In gaming and everyday use, this is generally hardly noticeable. Based on our impressions so far, backlight bleeding at the edges is minimal and becomes slightly visible mainly in very dark scenes. But ASUS has this well under control as well.

ASUS ROG Strix XG27UCGR Review: Conclusion

With the ROG Strix XG27UCG Gen2 (XG27UCGR), ASUS is launching a monitor that solves a real problem: Instead of having to choose between sharpness and speed, you get both in a single device. Sure, dual-mode monitors have been all the rage for a while now, but ASUS has executed this concept almost perfectly here.

The 4K mode at 162 Hz shines on the desktop and in graphically intensive games with great detail and accurate rendering, while the Full HD mode at up to 485 Hz caters to competitive gamers. And it does so without compromising on technical performance. Add to that full-fledged ergonomics, comfortable joystick controls, and a understated design.

There are some trade-offs where the price of around 410 euros shows its limitations: The USB-C port only charges at 15 watts, there’s no USB hub, and the HDR capabilities are limited to the level of a DisplayHDR 400 panel. Whether the ASUS ROG Strix XG27UCGR is ultimately worth it depends heavily on your personal usage profile. Those who truly take advantage of the flexibility between 4K and high-refresh-rate Full HD will find a well-thought-out overall package here.