ASUS - ROG Astral RTX 5090 OC vs NVIDIA - GeForce RTX 4080 SUPER
Between the ROG Astral RTX 5090 OC and GeForce RTX 4080 SUPER, the ROG Astral RTX 5090 OC comes out ahead in cuda / stream cores and ray tracing cores, while the GeForce RTX 4080 SUPER wins on tdp. Overall, the ROG Astral RTX 5090 OC scores 91.4 and the GeForce RTX 4080 SUPER scores 69.7 on our Mars Score.
Which should you buy?
The ROG Astral RTX 5090 OC is the clear pick on raw spec strength, leading by 21.7 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 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, ray tracing cores, 3dmark time spy, among others.
Pick the GeForce RTX 4080 SUPER if you care most about tdp. Its strongest claims are tdp.
Both ship with comparable dlss, so those specs don't separate the two — focus on the differences below.
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.
Why ASUS - ROG Astral RTX 5090 OC wins
- ▲CUDA / Stream cores — 112.50% more. 21760 vs 10240.
- ▲Ray tracing cores — 112.50% more. 170 vs 80.
- ▲3DMark Time Spy — 104.65% more. 44000 vs 21500.
- ▲VRAM — 100.00% more. 32 GB vs 16 GB.
- ▲Memory bus — 100.00% more. 512 bit vs 256 bit.
- ▲Boost clock — 4.12% more. 2655 MHz vs 2550 MHz.
Why NVIDIA - GeForce RTX 4080 SUPER wins
- ▲TDP — 280.00 W less. 320 vs 600.
Spec comparison
Core
| Spec | ASUS - ROG Astral RTX 5090 OC | NVIDIA - GeForce RTX 4080 SUPER |
|---|---|---|
| Chipset | GB202 | AD103 |
| Base clockⓘ | 2017 MHz | 2295 MHzlead |
| Boost clockⓘ | 2655 MHzlead | 2550 MHz |
| CUDA / Stream coresⓘ | 21760lead | 10240 |
| Ray tracing coresⓘ | 170lead | 80 |
Memory
| Spec | ASUS - ROG Astral RTX 5090 OC | NVIDIA - GeForce RTX 4080 SUPER |
|---|---|---|
| VRAMⓘ | 32 GBlead | 16 GB |
| VRAM typeⓘ | GDDR7lead | GDDR6X |
| Memory busⓘ | 512 bitlead | 256 bit |
Power & Form
| Spec | ASUS - ROG Astral RTX 5090 OC | NVIDIA - GeForce RTX 4080 SUPER |
|---|---|---|
| TDPⓘ | 600 W | 320 Wlead |
| Recommended PSUⓘ | 1200 W | 750 Wlead |
| Length | 357 mm | 304 mmlead |
| Slot size | 4-slot | 3-slot |
Benchmarks
| Spec | ASUS - ROG Astral RTX 5090 OC | NVIDIA - GeForce RTX 4080 SUPER |
|---|---|---|
| 3DMark Time Spyⓘ | 44000lead | 21500 |
| DLSSⓘ | true | true |
| FSRⓘ | false | false |
Frequently asked
Which has more VRAM, ROG Astral RTX 5090 OC or GeForce RTX 4080 SUPER?+
ROG Astral RTX 5090 OC ships with 32GB GDDR7 vs 16GB.
Which scores higher in 3DMark Time Spy, ROG Astral RTX 5090 OC or GeForce RTX 4080 SUPER?+
ROG Astral RTX 5090 OC scores 44000 vs 21500.
Which draws less power, ROG Astral RTX 5090 OC or GeForce RTX 4080 SUPER?+
GeForce RTX 4080 SUPER draws 320W TDP vs 600W.
Spec-level deep dives
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