The ROG Strix OLED XG27UCDMG is a 27-inch, 240Hz 4K gaming monitor that boasts the latest fourth-generation QD-OLED technology to deliver supersharp visuals and crisp text. The cutting-edge QD-OLED panel offers greater longevity compared to previous OLED technologies and minimal flicker―even when frame rates fluctuate. With the addition of the Neo Proximity Sensor in the new ROG OLED Care Pro suite, the monitor transitions to a black screen when no user is detected, guarding against burn-in.
Q: Is this monitor G-SYNC compatible?
A: Yes, it is G-SYNC Compatible (NVIDIA Adaptive Sync).
Q: What is the response time of this monitor?
A: The response time is 0.03 milliseconds.
Q: What type of OLED technology does this monitor use?
A: This monitor uses QD-OLED technology.
Q: What is the refresh rate of this monitor?
A: The refresh rate is 240Hz.
Q: What connectivity options does this monitor offer?
A: It includes DisplayPort 1.4, HDMI 2.1, USB-C (with DisplayPort Alt Mode and 90W Power Delivery), a USB hub, and an earphone jack.
Q: Does this monitor have built-in speakers?
A: No, this monitor does not have built-in speakers.
Q: How does the ASUS OLED Care+ feature work?
A: ASUS OLED Care+ uses a Neo Proximity Sensor to detect when a user is away and switches the monitor to a black screen to reduce burn-in risk.
Q: Will this monitor do 4k at 240 Hz?
A: The ASUS XG27UCDMG does support 4K resolution at 240 Hz, making it ideal for gaming and incredible visuals.

The ROG Strix OLED XG27UCDMG is a 27-inch, 240Hz 4K gaming monitor that boasts the latest fourth-generation QD-OLED technology to deliver supersharp visuals and crisp text. The cutting-edge QD-OLED panel offers greater longevity compared to previous OLED technologies and minimal flicker―even when frame rates fluctuate. With the addition of the Neo Proximity Sensor in the new ROG OLED Care Pro suite, the monitor transitions to a black screen when no user is detected, guarding against burn-in.

The ROG Swift OLED PG27UCDM is a 27-inch, 240Hz 4K gaming monitor that boasts the latest fourth-generation QD-OLED technology to deliver supersharp visuals and crisp text. The cutting-edge QD-OLED panel offers greater longevity compared to previous OLED technologies and minimal flicker―even when frame rates fluctuate. With the addition of the Neo Proximity Sensor in the new ROG OLED Care Pro suite, the monitor transitions to a black screen when no user is detected, guarding against burn-in. Built-in DisplayPort 2.1a UHBR20 provides a full 80Gbps bandwidth to support uncompressed 4K visuals at a stunning 240Hz to elevate viewing experiences to the next level.

The 27-inch ROG Strix OLED XG27AQDMG gaming monitor boasts an exclusive 1440p glossy WOLED panel with a 240 Hz refresh rate, OLED Anti-flicker technology and 0.03 ms gray-to-gray (GTG) response time for immersive, fast-paced gaming.

LG OLED picture + UltraGear speed. Experience apex gaming performance with the 27” QHD LG UltraGear OLED gaming monitor. Stay a step ahead of the competition with a 240Hz refresh rate and .03ms response time that will bring you into the game and compete like never before. The LG UltraGear OLED 27" anti-glare display lets you explore HDR content the way it was meant to be seen with up to DCI-P3 98.5%—an elevated color spectrum that showcases brilliant color and stunning, deep black levels.
| Pros for ASUS - ROG Strix 27" 4K OLED 240Hz 0.03ms Gaming Monitor with FreeSync Premium Pro and HDR (DisplayPort, HDMI) - Black | |||
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| Cons for ASUS - ROG Strix 27" 4K OLED 240Hz 0.03ms Gaming Monitor with FreeSync Premium Pro and HDR (DisplayPort, HDMI) - Black | |||
| There were no cons for this product— | There were no cons for this product— |
Customers are pleased with the ROG Strix monitor's vibrant color quality and buttery-smooth high refresh rate, making it excellent for gaming. Many appreciate the sleek design and positive gaming performance. However, some users find the HDR performance could be improved.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
This monitor has the best picture quality I’ve ever seen, which is a combination of the 4k res at 27 inches and the glossy QD-OLED screen. Everything with this monitor worked as expected, except the neo-proximity sensor which wouldn’t activate and deactivate reliably. Personally I’m still torn between this model and the PG32UCDMR, which is essentially the same monitor but 32 inches. But either is incredible. The only downside hardware-wise is that it doesn’t come with VESA screws, and the vesa mount is an extra piece that causes the monitor to sit further forward from the monitor arm than one that mounts directly into the back of the monitor.
Posted by CameronB
The Asus XG27UCDMG is a top tier monitor suitable for gaming and office work. The pixel density is super high making text crisp and clear. No text fringing whatsoever on this monitor. This monitor uses the latest 4th gen QD-Oled panel which significantly brighter than last gen panels. The OSD is very user friendly and the navigation between all the settings is easy enough. Picture quality and colors are better than my older IPS panel. The HDR is very good. However, it is not bright enough at least the default setting. There are other HDR modes that increase the brightness but you lose some picture details. Asus has done a good job releasing firmware update to improve picture quality and user experience, so maybe they're planning to increase brightness at the default (console mode) HDR setting. I'm using this monitor along with my gaming pc to play a wide range of games ranging from fast paced competitive shooting games to story mode games. There is no ghosting whatsoever and the response time is amazing. This is a Freesync Premium Pro monitor that works well with AMD Radeon graphics cards, and it is g-sync compatible, so it will work with Nvidia cards. I did notice that AMD Freesync Premium Pro does not work if you set the game to borderless full screen if you have 3 or more monitors connected. It doesn't seem that it's a monitor issue though since I tested a wide range of other monitors and AMD Freesync Premium Pro did not work with 3 monitor setup unless you set the game to full screen or you downgrade to 2 monitor set up. In that case you can set the game to borderless full screen and Freesync will work as it should. If you play story mode games, I recommend 32" oled monitors but if you play competitive games like shooting or MOBA, then 27" is recommended.
Posted by Jimmy
If you’ve never seen an oled monitor in person you’ll be blown away. Color and hdr is amazing out of the box, and you can adjust settings further to your liking. I recommend cinema hdr as it has the brightest peaks, so scenes with sunlight and other bright lights look amazing. If you find that highlights are being blown out (sun looks like a giant blob you can try console hdr with dynamic brightness boost disabled, or go to display true black 400 mode for the most accurate and consistent lighting, but both are noticeably darker so I’m not a fan. It’s recommended to only enable hdr when viewing hdr content, but with windows hdr calibration I find that to be not a big deal. Also don’t be intimidated about qd oled if you don’t play in a pitch black room, the whole raised blacks in ambient lighting thing is totally overblown and looks a lot worse on camera than it really is in real life. My only complaint is with the neo promixty sensor, which would sometimes not detect me properly and switch off the screen while I was in the middle of a game. I ended up disabling it and just letting windows time out after 5 minutes which is the same thing anyway.
Posted by KhaiT