Samsung - Odyssey OLED G9 (G93SC) vs ASUS - ROG Swift PG34WCDM
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - Odyssey OLED G9 (G93SC) | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Screen size | 49 " | 34 " |
| USB-C Power Delivery | 65 W | 90 W |
| Peak brightness | 1000 nits | 1300 nits |
| G-Sync | false | true |
Between the Odyssey OLED G9 (G93SC) and ROG Swift PG34WCDM, the Odyssey OLED G9 (G93SC) comes out ahead in screen size, while the ROG Swift PG34WCDM wins on usb-c power delivery / peak brightness. Overall, the Odyssey OLED G9 (G93SC) scores 85.6 and the ROG Swift PG34WCDM scores 76.8 on our Mars Score.
Which should you buy?
The Odyssey OLED G9 (G93SC) is the clear pick on raw spec strength, leading by 8.8 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Odyssey OLED G9 (G93SC) 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 screen size. The single most decisive one: Screen size — 44.12% more. 49 " vs 34 ".
Pick the ROG Swift PG34WCDM if you care most about usb-c power delivery / peak brightness. Its strongest claims 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.
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: Samsung - Odyssey OLED G9 (G93SC) or ASUS - ROG Swift PG34WCDM?
Samsung - Odyssey OLED G9 (G93SC) leads the current Mars Score by 8.8 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 Samsung - Odyssey OLED G9 (G93SC) if…
Samsung - Odyssey OLED G9 (G93SC) has the measurable edge on screen size in.
Choose ASUS - ROG Swift PG34WCDM if…
ASUS - ROG Swift PG34WCDM has the measurable edge on has usb c pd w, peak brightness nits, has g sync.
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 Samsung - Odyssey OLED G9 (G93SC) wins
- ▲Screen size — 44.12% more. 49 " vs 34 ".
Why ASUS - ROG Swift PG34WCDM 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.
Spec comparison
Panel
| Spec | Samsung - Odyssey OLED G9 (G93SC) | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Screen size | 49 "lead | 34 " |
| Panel typeⓘ | QD-OLED | QD-OLED |
| Resolutionⓘ | 5Klead | 1440p |
| Aspect ratioⓘ | 32:9 | 21:9 |
| Curvedⓘ | true | true |
Performance
| Spec | Samsung - Odyssey OLED G9 (G93SC) | 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ⓘ | false | truelead |
| FreeSyncⓘ | true | true |
Connectivity
| Spec | Samsung - Odyssey OLED G9 (G93SC) | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| HDMI ports | 1 | 2lead |
| DisplayPort ports | 1 | 1 |
| USB-C inputⓘ | true | true |
| USB-C Power Deliveryⓘ | 65 W | 90 Wlead |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, Odyssey OLED G9 (G93SC) or ROG Swift PG34WCDM?+
ROG Swift PG34WCDM refreshes at 240Hz vs 240Hz.
Which has faster response time, Odyssey OLED G9 (G93SC) or ROG Swift PG34WCDM?+
ROG Swift PG34WCDM responds in 0.03ms vs 0.03ms.
Does Odyssey OLED G9 (G93SC) or ROG Swift PG34WCDM have USB-C with power delivery?+
Both offer USB-C PD — 65W on Odyssey OLED G9 (G93SC), 90W on ROG Swift PG34WCDM.