ASUS - ROG Swift PG39WCDM vs Samsung - Odyssey OLED G9 (G93SC)
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - ROG Swift PG39WCDM | Samsung - Odyssey OLED G9 (G93SC) |
|---|---|---|
| USB-C Power Delivery | 90 W | 65 W |
| Peak brightness | 1300 nits | 1000 nits |
| Screen size | 39 " | 49 " |
| G-Sync | true | false |
Between the ROG Swift PG39WCDM and Odyssey OLED G9 (G93SC), the ROG Swift PG39WCDM comes out ahead in usb-c power delivery / peak brightness, while the Odyssey OLED G9 (G93SC) wins on screen size. Overall, the ROG Swift PG39WCDM scores 78.3 and the Odyssey OLED G9 (G93SC) scores 85.6 on our Mars Score.
Which should you buy?
The Odyssey OLED G9 (G93SC) edges ahead on the Mars Score (78.3 vs 85.6), but the 7.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ROG Swift PG39WCDM if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are usb-c power delivery, peak brightness, g-sync. The single most decisive one: USB-C Power Delivery — 38.46% more. 90 W vs 65 W.
Pick the Odyssey OLED G9 (G93SC) if you care most about screen size. Its strongest claims are screen size. The single most decisive one: Screen size — 25.64% more. 49 " vs 39 ".
Both ship with comparable refresh rate, response time (gtg), dci-p3 coverage, so those specs do not separate the two — focus on the differences below.
Bottom line: the Odyssey OLED G9 (G93SC) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: ASUS - ROG Swift PG39WCDM or Samsung - Odyssey OLED G9 (G93SC)?
Samsung - Odyssey OLED G9 (G93SC) leads the current Mars Score by 7.3 points.The more useful decision is the trade-off behind that result: compare screen size against the way you will actually use the product.
Choose ASUS - ROG Swift PG39WCDM if…
ASUS - ROG Swift PG39WCDM has the measurable edge on has usb c pd w, peak brightness nits, has g sync.
Choose Samsung - Odyssey OLED G9 (G93SC) if…
Samsung - Odyssey OLED G9 (G93SC) has the measurable edge on screen size in.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why ASUS - ROG Swift PG39WCDM wins
- ▲USB-C Power Delivery — 38.46% more. 90 W vs 65 W.
- ▲Peak brightness — 30.00% more. 1300 nits vs 1000 nits.
- ▲Has G-Sync.
Why Samsung - Odyssey OLED G9 (G93SC) wins
- ▲Screen size — 25.64% more. 49 " vs 39 ".
Spec comparison
Panel
| Spec | ASUS - ROG Swift PG39WCDM | Samsung - Odyssey OLED G9 (G93SC) |
|---|---|---|
| Screen size | 39 " | 49 "lead |
| Panel typeⓘ | QD-OLED | QD-OLED |
| Resolutionⓘ | 1440p | 5Klead |
| Aspect ratioⓘ | 21:9 | 32:9 |
| Curvedⓘ | true | true |
Performance
| Spec | ASUS - ROG Swift PG39WCDM | Samsung - Odyssey OLED G9 (G93SC) |
|---|---|---|
| Refresh rateⓘ | 240 Hz | 240 Hz |
| Response time (GtG)ⓘ | 0.03 ms | 0.03 ms |
| Peak brightnessⓘ | 1300 nitslead | 1000 nits |
| DCI-P3 coverageⓘ | 99 % | 99 % |
| HDRⓘ | true | true |
| G-Syncⓘ | truelead | false |
| FreeSyncⓘ | true | true |
Connectivity
| Spec | ASUS - ROG Swift PG39WCDM | Samsung - Odyssey OLED G9 (G93SC) |
|---|---|---|
| HDMI ports | 2lead | 1 |
| DisplayPort ports | 1 | 1 |
| USB-C inputⓘ | true | true |
| USB-C Power Deliveryⓘ | 90 Wlead | 65 W |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, ROG Swift PG39WCDM or Odyssey OLED G9 (G93SC)?+
Odyssey OLED G9 (G93SC) refreshes at 240Hz vs 240Hz.
Which has faster response time, ROG Swift PG39WCDM or Odyssey OLED G9 (G93SC)?+
Odyssey OLED G9 (G93SC) responds in 0.03ms vs 0.03ms.
Does ROG Swift PG39WCDM or Odyssey OLED G9 (G93SC) have USB-C with power delivery?+
Both offer USB-C PD — 90W on ROG Swift PG39WCDM, 65W on Odyssey OLED G9 (G93SC).