ASUS - ROG Astral RTX 5090 OC vs AMD - Radeon RX 9080 XT
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - ROG Astral RTX 5090 OC | AMD - Radeon RX 9080 XT |
|---|---|---|
| TDP | 600 W | 330 W |
| CUDA / Stream cores | 21760 | 8192 |
| 3DMark Time Spy | 44000 | 28500 |
| VRAM | 32 GB | 24 GB |
| Memory bus | 512 bit | 384 bit |
| Ray tracing cores | 170 | 128 |
Between the ROG Astral RTX 5090 OC and Radeon RX 9080 XT, the ROG Astral RTX 5090 OC comes out ahead in cuda / stream cores / 3dmark time spy, while the Radeon RX 9080 XT wins on tdp / boost clock. Overall, the ROG Astral RTX 5090 OC scores 86.5 and the Radeon RX 9080 XT scores 79 on our Mars Score.
Which should you buy?
The ROG Astral RTX 5090 OC edges ahead on the Mars Score (86.5 vs 79), but the 7.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ROG Astral RTX 5090 OC if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are cuda / stream cores, 3dmark time spy, vram, among others. The single most decisive one: CUDA / Stream cores — 165.63% more. 21760 vs 8192.
Pick the Radeon RX 9080 XT if you care most about tdp / boost clock. Its strongest claims are tdp, boost clock. The single most decisive one: TDP — 270.00 W less. 330 vs 600.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the ROG Astral RTX 5090 OC 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 Astral RTX 5090 OC or AMD - Radeon RX 9080 XT?
ASUS - ROG Astral RTX 5090 OC leads the current Mars Score by 7.5 points.The more useful decision is the trade-off behind that result: compare vram, cuda / stream cores, boost clock, tdp against the way you will actually use the product.
Choose ASUS - ROG Astral RTX 5090 OC if…
ASUS - ROG Astral RTX 5090 OC has the measurable edge on cuda cores, timespy score, vram gb.
Choose AMD - Radeon RX 9080 XT if…
AMD - Radeon RX 9080 XT has the measurable edge on tdp w, boost clock mhz.
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 Astral RTX 5090 OC wins
- ▲CUDA / Stream cores — 165.63% more. 21760 vs 8192.
- ▲3DMark Time Spy — 54.39% more. 44000 vs 28500.
- ▲VRAM — 33.33% more. 32 GB vs 24 GB.
- ▲Memory bus — 33.33% more. 512 bit vs 384 bit.
- ▲Ray tracing cores — 32.81% more. 170 vs 128.
- ▲Has DLSS.
Why AMD - Radeon RX 9080 XT wins
- ▲TDP — 270.00 W less. 330 vs 600.
- ▲Boost clock — 16.76% more. 3100 MHz vs 2655 MHz.
Spec comparison
Core
| Spec | ASUS - ROG Astral RTX 5090 OC | AMD - Radeon RX 9080 XT |
|---|---|---|
| Chipset | GB202 | Navi 48 |
| Base clockⓘ | 2017 MHz | 2100 MHzlead |
| Boost clockⓘ | 2655 MHz | 3100 MHzlead |
| CUDA / Stream coresⓘ | 21760lead | 8192 |
| Ray tracing coresⓘ | 170lead | 128 |
Memory
| Spec | ASUS - ROG Astral RTX 5090 OC | AMD - Radeon RX 9080 XT |
|---|---|---|
| VRAMⓘ | 32 GBlead | 24 GB |
| VRAM typeⓘ | GDDR7 | GDDR7 |
| Memory busⓘ | 512 bitlead | 384 bit |
Power & Form
| Spec | ASUS - ROG Astral RTX 5090 OC | AMD - Radeon RX 9080 XT |
|---|---|---|
| TDPⓘ | 600 W | 330 Wlead |
| Recommended PSUⓘ | 1200 W | 850 Wlead |
| Length | 357 mm | 320 mmlead |
| Slot size | 4-slot | 3-slot |
Benchmarks
| Spec | ASUS - ROG Astral RTX 5090 OC | AMD - Radeon RX 9080 XT |
|---|---|---|
| 3DMark Time Spyⓘ | 44000lead | 28500 |
| DLSSⓘ | truelead | false |
| FSRⓘ | false | truelead |
Frequently asked
Which has more VRAM, ROG Astral RTX 5090 OC or Radeon RX 9080 XT?+
ROG Astral RTX 5090 OC ships with 32GB GDDR7 vs 24GB.
Which scores higher in 3DMark Time Spy, ROG Astral RTX 5090 OC or Radeon RX 9080 XT?+
ROG Astral RTX 5090 OC scores 44000 vs 28500.
Which draws less power, ROG Astral RTX 5090 OC or Radeon RX 9080 XT?+
Radeon RX 9080 XT draws 330W TDP vs 600W.