Asus ROG Swift PG27UCWM gaming monitor review: Speed and pixel density in a premium package

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Tom's Hardware Verdict The Asus ROG Swift PG27UCWM isn’t quite perfect, but it is one of the best 27-inch 4K OLEDs you can buy. It packs stunning imagery and premium gaming performance into a high-end package. Pros - +Excellent brightness for SDR and HDR with a variable option - +Dolby Vision support - +Color accurate out of the box with high gamut volume - +Superb gaming performance with low input lag and quick panel response - +Flexibility from ELMB and Frame Rate Boost features - +Premium styling and build quality Cons - -sRGB modes are slightly undersaturated - -Light gamma out of the box - -No internal speakers Why you can trust Tom's Hardware Asus has introduced some of the best OLED gaming monitors in recent years, and with each generation, it makes incremental improvements in performance, features, and technology. Its latest panel type is Tandem RGB Stripe, bringing higher brightness, a wide color gamut, sharper imagery, and lower power consumption. The latest ROG Swift display to hit my test bench is the PG27UCWM. It’s a 27-inch 4K panel with 240 Hz (480 Hz in FHD), HDR10, Dolby Vision, DisplayHDR 400, and Adaptive-Sync. Let’s take a look. Asus ROG Swift PG27UCWM Specs I’ve reviewed a few Tandem RGB Stripe OLEDs of late, most recently, Asus’ 32-inch version of this screen, the PG32UCWM. There’s no denying the extra sharpness that this tech brings. Though I never saw much color fringing around text as discussed online, these new panels are clearly sharper than single-layer OLEDs. By sandwiching two layers and making the pixels’ physical shape narrower, you get more clarity, more color, and more brightness at a given wattage. And by driving the panel less aggressively, its lifespan is extended. The PG27UCWM’s color volume is greater than that of single-layer OLEDs but not quite as large as that of Quantum Dot displays. I measured just over 102% coverage on my sample, whereas you’ll get closer to 110% with a QD monitor. Asus includes factory calibration with each monitor, and you can find that stored in firmware and accessed through the comprehensive OSD. Peak brightness is just under 500 nits when measuring a 25% window pattern with uniform brightness turned off. That number holds for both SDR and HDR content. The PG27UCWM supports HDR10 and Dolby Vision, with VESA DisplayHDR 400 certification. Asus’ TrueBlack Glossy screen coating keeps reflected light from spoiling those deep black levels. In the video processing department, Asus includes a dual-refresh feature called Frame Rate Boost that switches between 4K/240 Hz and Full HD/480 Hz. You can change modes with a single button press. Also in the mix is Adaptive-Sync, with certifications from both Nvidia (G-Sync) and AMD (FreeSync Premium Pro). And you can augment lower frame rate capable systems with ELMB (Extreme Low Motion Blur). The PG27UCWM, like all ROG Swift products, is feature-rich. You get Asus’ GamePlus enhancements, including multiple aiming points, sniper modes, frame rate counters, timers, and alignment marks. The quick menu and joystick clicks are fully customizable for quick access to many functions. And you can download Asus’ DisplayWidget Center app for full control on Windows or Mac desktops. A full array of inputs includes DisplayPort 2.1 with 80 Gbps bandwidth, HDMI 2.1, USB-C, and a USB 3.2 hub with KVM options. Get Tom's Hardware's best news and in-depth reviews, straight to your inbox. There are plenty of cables included, along with Asus’ signature LED lighting and graphics. The PG27UCWM is firmly in the premium segment at a starting price of $1,099. I would expect greatness for that sum, and if you read on, we’ll see if it delivers. Assembly and Accessories The PG27UCWM arrives in a well-adorned carton with colorful graphics and secure, recyclable packaging. The base, upright, and panel are separate, as is the lens for the ROG logo projector that shines symbols on your desk. It includes multiple lenses. The ROG pouch reveals cables for USB, HDMI, and DisplayPort, plus IEC for the internal power supply. There’s also a heavy stamped steel bracket that snaps onto the panel to create a 100mm VESA mount. Product 360 View Original View Original View Original View Original The PG27UCWM features Asus’ latest ROG Swift styling cues, with clear plastic on the back that reveals some of the monitor’s internal components. Opposite that is the Lite Brite ROG graphic that can light up in a multitude of colors and effects. More LEDs can be found on the front, on the small protrusion beneath the screen, as well as on the base and even the sliding bit on the stand’s upright. All this fun can be controlled in the OSD and by DisplayWidget Center. In front, the bezel is very narrow on all sides, just 9-11 millimeters, with a small protrusion at the bottom center for the joystick and control buttons. It also contains a sensor that works with the OLED care features to shut off the panel when you leave your desk. From the side, you can see the panel-on-box design that is common to many OLEDs. This not only looks nice but aids in cooling. The OLED is backed by a metal plate that helps dissipate heat, along with a graphene layer inside, heatsinks on the internal circuit boards, and a heat-efficient power module. The PG27UCWM is fanless and always ran cool during my time with it. The stand is very solid with a cast aluminum base that is both wide and deep. The upright features full ergonomics with a 4.4-inch height range, 5/20-degree tilt, 30-degree swivel, and a 90-degree portrait mode. Movements are firm and smooth with no wobble or play. The stand also has a threaded tripod socket on top for things like webcams. The I/O panel is well-appointed with a single DisplayPort 2.1 (UHBR20, 80 Gbps), two HDMI 2.1, a USB-C, and a USB hub with one upstream and three downstream. The hub has full KVM functionality, along with version control and power for the USB-C up to 90 watts. There are no internal speakers, but you do get a 3.5mm headphone jack. OSD Features The PG27UCWM has two buttons and a joystick to cover all monitor functions. Pressing the left button switches the refresh rate between 240 Hz and 480 Hz. The right button is a power toggle. Pressing the joystick brings up a quick menu which is fully programmable. A second press reveals the full OSD. View Original View Original View Original View Original View Original View Original View Original View Original View Original View Original The quick menu has four slots for any function you might want quick access to, like picture mode, brightness, and the like. The full OSD starts with Gaming, and there, you’ll find the GamePlus suite with a large selection of aiming points, sniper modes, frame counters, timers, a stopwatch, and display alignment marks. GameVisual refers to the nine picture modes, each aimed at different game types or tasks. Racing is the default and best choice there. The PG27UCWM is one of the few monitors to support Dolby Vision in addition to HDR10. Dolby Vision uses dynamic tone mapping from the content metadata to tailor its luminance curve for each individual display. This renders the content more faithfully and with more impact than the fixed tone curve from HDR10 material. For that format, you get four more modes with the option to adjust brightness and other parameters. To adjust color, the PG27UCWM includes a gamut selector, gamma presets, and color temps arranged by Kelvin value. You can also adjust RGB sliders for finer control. My sample was nearly perfect out of the box, and I could only make a tiny difference with calibration. OLED Care includes many toggles for screen savers, logo detection, and more. Pixel Cleaning is a panel refresh feature that takes about six minutes to complete. When I first powered up the PG27UCWM, it prompted me to do this. I’ve found this to improve screen uniformity with brand-new panels, so I make it a habit for every review. A front-mounted sensor can be configured to shut off the monitor when you leave your desk. To view two video sources simultaneously, use the PIP and PBP options. Each can have its own color settings, and you can size the PIP window. Aura RGB is the lighting feature, and it offers a wide range of effects and colors. Light In Motion works with the DisplayWidget Center app to create light shows that mimic what’s happening on the screen. The quick menu and joystick are fully programmable, so you can access up to 9 functions quickly. This is great for switching inputs, adjusting brightness, changing the refresh mode or what have you. Also included are two memory settings. The System Setup menu can be left alone in most scenarios, but one option you must address is the Power Setting. It’s on Power Saving by default, and that limits brightness. Switch to Performance Mode to unlock the PG27UCWM’s full potential. Asus ROG Swift PG27UCWM Calibration Settings The PG27UCWM measured close to spec out of the box for grayscale and color, but I noted a slight gamma shift. To improve this metric, I selected the 2.4 preset, which made it a tad darker in a good way. I also adjusted the RGB sliders for a tiny gain in grayscale accuracy. For gaming, calibration is completely unnecessary. My suggested settings are below and include brightness values for Uniform Brightness on or off. For HDR10 content, I recommend the Gaming HDR mode even though its EOTF tracking is lighter than spec. You can read more about this on page five. For spot-on HDR, True Black mode is the winner. Gaming and Hands-on I have yet to game on an Asus OLED that wasn’t addictive in its imagery and responsiveness. The PG27UCWM was no exception. It’s super quick with no perceptible input lag and perfectly smooth motion resolution. For frame rates, I tried both modes, 240 and 480, and had excellent results. With a GeForce RTX 4090 in my test PC, I kept the action at 220-230fps in 4K with HDR enabled. This was awesome, to say the least, with every detail rendered sharply whether static or moving. I knew my system was working hard because the fans ran fast and there was a good bit of warm air circulating about my legs as I dispatched enemies in Doom Eternal. To switch refresh modes, I had to exit to the Windows desktop to prevent the game from crashing. This is typical of the dual-refresh monitors I’ve reviewed and has nothing to do with their operation. At 480 Hz in FHD resolution, the picture was softer but not tremendously so. Games were just as playable and addictive. I kept the frame rate locked at 480 fps across all scenarios. It didn’t make play better for me, but I can see the advantage for users with slower PCs. Or if you just want to brag about frame rates. HDR color and contrast were exemplary, and I toggled between two HDR picture modes: Gaming and True Black. You’ll see the technical differences between them on page five, but visually, Gaming provided a bit more brightness while True Black had better midtone contrast. It came down to game type for me. Bright outdoor scenery looked better in Gaming while dark imagery looked better in True Black. As with the frame rate boost feature, switching HDR modes should be done on the Windows desktop rather than in a game. I noted light gamma during testing, which in SDR mode manifested as a slight flattening of the image. I fixed this by upping the gamma setting to 2.4 and raising the brightness value a few points. This added more texture to the picture, which was easy to see in a side-by-side comparison. For a more scientific explanation of the PG27UCWM’s gamma performance, see my test results on page four. Like all Asus ROG Swift displays, the PG27UCWM is premium in every respect. It looks great just sitting on a desk with its clear back and extensive but not garish lighting. I turned on all the Aura RGB elements and enjoyed the show without distraction from games or work. The accents are well-balanced, even down to the logo projector, a feature unique to Asus ROG Swift monitors. The Tandem RGB Stripe panel was visibly sharper than last year’s Quantum Dot-based PG27UCDM. The difference is small, but it is there. Text was rendered with perfect edges, free of artifacts such as fringing or jaggies. I could also see a difference in photos, especially when zooming in to the pixel level. This is a great monitor for content creation and writing. I also appreciated the inclusion of Dolby Vision for watching movies and TV shows. There is a lot of DV content on disc and through streaming services like Netflix, Disney+, and HBO Max. The PG27UCWM has plenty of convenience features, such as USB ports with KVM and a tripod thread on the stand. But I missed internal speakers. Game sound had to come through headphones plugged into the provided 3.5mm jack. Takeaway: The PG27UCWM is a supremely versatile monitor with lots of features, premium styling, excellent build quality, and top-level game performance. Competitive gamers will appreciate its advanced video processing, low input lag, and smooth response. Image quality is also top-shelf with accurate and saturated color, high luminance, and a variable brightness option. The Tandem RGB Stripe tech delivers a sharper picture than Quantum Dot or single-layer OLEDs. MORE: Best Gaming Monitors MORE: How We Test PC Monitors MORE: How to Buy a PC Monitor Current page: Features and Specifications Next Page Response, Input Lag, Viewing Angles and Uniformity Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.