The ASUS ROG Swift OLED PG34WCDM is a 34-inch 1440p premium ultrawide OLED gaming monitor with an 800R curve. It's one of a handful of OLEDs in the ROG lineup, alongside monitors like the ASUS ROG Swift OLED PG32UCDM. It has a class-leading 240Hz refresh rate, has VRR support for FreeSync Premium Pro, and is certified as NVIDIA G-SYNC compatible. It also has RGB lighting on the back of the monitor and its stand. It has several additional gaming features, including crosshair and shadow boost. In addition to its gaming capabilities, it has several productivity features, like a KVM switch with drag-and-drop file movement capability, 90W power delivery over USB-C, Clear Pixel Edge, which purports to decrease fringing on text and the edges of windows, and an adjustable blue light filter to reduce the amount of blue light from the monitor.
Our Verdict
The ASUS PG34WCDM is incredible for PC gaming. Its high 240Hz refresh rate provides a smooth feel, and this monitor supports VRR to reduce screen tearing. It has an exceptionally fast response time, so there's almost no blur behind fast-moving objects, and it has low input lag, so fast-paced games feel responsive. It also has near-infinite contrast, and deep blacks are visible next to bright highlights, creating an immersive experience.
- Perfect black levels.
- Low input lag.
- Near-instantaneous response time.
- 240Hz refresh rate and VRR support.
- Risk of permanent burn-in with static elements.
- Noticeable VRR flicker with changing frame rates.
The ASUS PG34WCDM is decent for console gaming. It can't take full advantage of the PS5 and Xbox Series X|S, as it has limited compatibility. While it supports VRR, it doesn't work with a 16:9 aspect ratio, so you would need to have a stretched 21:9 image for VRR to work. Luckily, it still provides high-end gaming performance as it has a near-instantaneous response time, so fast-moving objects are sharp, and it has low input lag for a responsive feel. It also has exceptional picture quality with perfect blacks and no blooming around bright objects.
- Perfect black levels.
- Low input lag.
- Near-instantaneous response time.
- Risk of permanent burn-in with static elements.
- Can't take full advantage of gaming consoles.
The ASUS PG34WCDM is very good for office use in certain circumstances. Its large, ultrawide 34-inch screen allows you to open multiple windows side by side. It also has decent brightness and fantastic reflection handling, so it's visible in most lighting conditions, though it doesn't get bright enough to fight intense glare. However, it has only adequate text clarity, and text is less sharp than many other ultrawide 1440p displays. Its strong 800R makes it more difficult to share your screen with someone sitting next to you. Finally, OLEDs like this one are prone to burn-in with constant exposure to the same static elements over time.
- Large 34-inch ultrawide screen.
- Fantastic reflection handling.
- Wide viewing angles.
- KVM switch and USB-C port.
- Reduced text clarity due to subpixel layout.
- Risk of permanent burn-in with static elements.
- Strong 800R curve not for everyone.
- Not bright enough to fight really intense glare.
The ASUS PG34WCDM is excellent for content creation. Its 34-inch display is large enough to open multiple windows at the same time. Additionally, it has excellent color accuracy and displays a wide range of colors, even in HDR, making it a great choice for editing videos or images in HDR. However, its strong 800R curve makes it difficult to share your screen with others next to you. Its subpixel layout makes the text less clear than other 34-inch 1440p monitors. Finally, OLEDs like this one are prone to burn-in with constant exposure to the same static elements over time.
- Large 34-inch ultrawide screen.
- Fantastic reflection handling.
- Wide viewing angles.
- Excellent color accuracy before calibration.
- KVM switch and USB-C port.
- Reduced text clarity due to subpixel layout.
- Risk of permanent burn-in with static elements.
- Strong 800R curve not for everyone.
- Not bright enough to fight really intense glare.
The ASUS PG34WCDM has decent brightness. It's fine if you want to use it in a room with a few lights around, but it doesn't get bright enough to fight intense glare. It also has decent HDR brightness, as small highlights really pop against the rest of the image, but larger highlights are muted.
- Small highlights pop in HDR.
- Not bright enough to fight really intense glare.
The ASUS PG34WCDM has a near-instantaneous response time, leading to exceptionally sharp motion.
- Near-instantaneous response time.
- Outstanding refresh rate compliance.
The ASUS PG34WCDM is amazing for HDR. It has a near-infinite contrast ratio, and deep blacks are visible next to bright highlights, creating an immersive experience. It displays a wide range of colors in HDR, but not all colors are bright and vivid.
- Perfect black levels.
- No blooming around bright objects.
The ASUS PG34WCDM has exceptional picture quality in SDR. It displays deep and inky blacks without any blooming, and it also displays a wide range of colors.
- Perfect black levels.
- No blooming around bright objects.
The ASUS PG34WCDM has excellent color accuracy. It has an extremely accurate sRGB mode, although you still need to calibrate it for the best accuracy. Luckily, it has great gray uniformity, so it keeps those accurate colors consistent across the entire screen.
- Excellent color accuracy before calibration.
- Great gray uniformity.
Performance Usages
Changelog
- Updated Feb 21, 2025: We've converted this review to Test Bench 2.0.1. This includes a new test result for DisplayPort 2.1 Transmission Bandwidth.
-
Updated Nov 19, 2024:
Added that the MSI MPG 341CQPX QD-OLED displays bright HDR colors more vividly.
-
Updated Nov 08, 2024:
Clarified that this monitor has a DSC Support setting to disable DSC, resulting in a lower Refresh Rate.
- Updated Jun 03, 2024: Added in the introduction that this monitor sits alongside other OLEDs, like the ASUS ROG Swift OLED PG32UCDM, in ASUS' gaming lineup.
Check Price
Differences Between Sizes And Variants
We tested the 34-inch ASUS ROG Swift OLED PG34WCDM, which is the only size available for this monitor. The results are only valid for this model.
| Model | Size | Resolution | Panel Type | Refresh Rate | Firmware Version Tested |
|---|---|---|---|---|---|
| PG34WCDM | 34" | 1440p | OLED | 240Hz | MCM101 |
Our unit was manufactured in December 2023; you can see the label here.
Popular Monitor Comparisons
The ASUS PG34WCDM is a fantastic 34-inch ultrawide gaming monitor. It has a higher refresh rate than most other 34-inch ultrawide monitors OLED monitors, as well as a much stronger curve to the display. It's an outstanding choice for someone who wants an extremely smooth and responsive feel while gaming on a 34-inch ultrawide monitor. However, it's also very expensive, and models with very similar gaming performance are available in this size for considerably less, like the Dell Alienware AW3423DWF, which has more vivid colors but a lower refresh rate than the ASUS.
See our recommendations for the best ultrawide monitors, the best ultrawide gaming monitors, and the best gaming monitors.
The ASUS ROG Swift OLED PG34WCDM and the Dell Alienware AW3425DW are both 240Hz ultrawide gaming monitors. They both have OLED panels, but they're different types of OLED. The Dell has a QD-OLED panel with more vivid colors, with the main downside being that blacks look purple in bright rooms. The WOLED panel of the ASUS doesn't have that issue, but it has other downsides, like the fact that text doesn't look as sharp. The ASUS does have extra features, though, as it has a USB-C port with DisplayPort Alt Mode and a KVM switch, making it the better choice for productivity.
The ASUS ROG Swift OLED PG34WCDM and the LG 34GS95QE-B are competing ultrawide OLED monitors that use the same panel. As they perform similarly, choosing one over the other comes down to their features. The ASUS has a USB hub that includes a KVM switch, and it has more productivity features, so it's the better choice for multitasking with different computers. On the other hand, the LG is the better choice if you want to get something for console gaming, as it supports any signal from the Xbox Series X|S and PS5, which the ASUS can't do.
The ASUS ROG Swift OLED PG34WCDM and the MSI MPG 341CQPX QD-OLED are 240Hz 34-inch ultrawide OLEDs. The ASUS is the better option if you're playing in a room with a lot of ambient light, as deep blacks don't appear purple. However, the MSI is the better option if you want the most vivid colors.
The ASUS ROG Swift OLED PG34WCDM and the Dell Alienware AW3423DWF are both 34-inch ultrawide OLED premium gaming monitors. Both offer outstanding gaming performance, as well as incredible HDR capabilities. If a smooth gaming experience is important to you, then the ASUS is a better choice, as it has a higher refresh rate and is better at reducing persistence blur in fast-moving games because it has a BFI feature. However, if color richness is important to you, the Dell is the better choice, as it has far more vivid HDR colors. You may also prefer the ASUS if you're gaming in a brighter environment, as deep blacks won't appear purple as they do on the Dell.
We buy and test more than 30 monitors each year, all of which we purchase ourselves, without cherry-picked units or samples. We put a lot into each unbiased, straight-to-the-point review, and there's a whole process from purchasing to publishing, involving multiple teams and people. We do more than just use the monitor for a week; we use specialized, custom tools to measure various aspects and deliver objective, data-driven results. We also consider multiple factors before making any recommendations, including the monitor's cost, its performance compared to the competition, and whether it's easy to find.
Test Results
for pictures & test results
for pictures & test results
for videos & test results
for pictures & test results
for pictures & test results
for pictures & test results
for videos & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
