Between the MPG 321URX and ROG Swift PG34WCDM, the MPG 321URX comes out ahead in usb-c power delivery, while the ROG Swift PG34WCDM wins on peak brightness and screen size. Overall, the MPG 321URX scores 73.2 and the ROG Swift PG34WCDM scores 75.1 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (73.2 vs 75.1). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the MPG 321URX if you care most about usb-c power delivery. The biggest gaps in its favor are usb-c power delivery.
Pick the ROG Swift PG34WCDM if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are peak brightness, screen size.
Both ship with comparable refresh rate, response time (gtg), dci-p3 coverage, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why MSI - MPG 321URX wins
- ▲USB-C Power Delivery — 8.89% more. 98 W vs 90 W.
Why ASUS - ROG Swift PG34WCDM wins
- ▲Peak brightness — 30.00% more. 1300 nits vs 1000 nits.
- ▲Screen size — 6.25% more. 34 " vs 32 ".
Spec comparison
Panel
| Spec | MSI - MPG 321URX | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Screen sizeⓘ | 32 " | 34 "lead |
| Panel typeⓘ | QD-OLED | QD-OLED |
| Resolutionⓘ | 4Klead | 1440p |
| Aspect ratioⓘ | 16:9 | 21:9 |
| Curvedⓘ | false | truelead |
Performance
| Spec | MSI - MPG 321URX | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Refresh rateⓘ | 240 Hz | 240 Hz |
| Response time (GtG)ⓘ | 0.03 ms | 0.03 ms |
| Peak brightnessⓘ | 1000 nits | 1300 nitslead |
| DCI-P3 coverageⓘ | 99 % | 99 % |
| HDRⓘ | true | true |
| G-Syncⓘ | true | true |
| FreeSyncⓘ | true | true |
Connectivity
| Spec | MSI - MPG 321URX | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| HDMI ports | 2 | 2 |
| DisplayPort ports | 1 | 1 |
| USB-C input | true | true |
| USB-C Power Deliveryⓘ | 98 Wlead | 90 W |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, MPG 321URX or ROG Swift PG34WCDM?+
ROG Swift PG34WCDM refreshes at 240Hz vs 240Hz.
Which has faster response time, MPG 321URX or ROG Swift PG34WCDM?+
ROG Swift PG34WCDM responds in 0.03ms vs 0.03ms.
Does MPG 321URX or ROG Swift PG34WCDM have USB-C with power delivery?+
Both offer USB-C PD — 98W on MPG 321URX, 90W on ROG Swift PG34WCDM.
Spec-level deep dives
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