ASUS - ROG Astral RTX 5080 OC vs ASUS - ROG Astral RTX 5090 OC
Between the ROG Astral RTX 5080 OC and ROG Astral RTX 5090 OC, the ROG Astral RTX 5080 OC comes out ahead in tdp, while the ROG Astral RTX 5090 OC wins on cuda / stream cores and ray tracing cores. Overall, the ROG Astral RTX 5080 OC scores 78.7 and the ROG Astral RTX 5090 OC scores 91.4 on our Mars Score.
Which should you buy?
The ROG Astral RTX 5090 OC is the clear pick on raw spec strength, leading by 12.7 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 5080 OC if you care most about tdp. The biggest gaps in its favor are tdp.
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. Its strongest claims are cuda / stream cores, ray tracing cores, vram, among others.
Both ship with comparable boost clock, 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 5080 OC wins
- ▲TDP — 240.00 W less. 360 vs 600.
Why ASUS - ROG Astral RTX 5090 OC wins
- ▲CUDA / Stream cores — 102.38% more. 21760 vs 10752.
- ▲Ray tracing cores — 102.38% more. 170 vs 84.
- ▲VRAM — 100.00% more. 32 GB vs 16 GB.
- ▲Memory bus — 100.00% more. 512 bit vs 256 bit.
- ▲3DMark Time Spy — 35.38% more. 44000 vs 32500.
Spec comparison
Core
| Spec | ASUS - ROG Astral RTX 5080 OC | ASUS - ROG Astral RTX 5090 OC |
|---|---|---|
| Chipset | GB203 | GB202 |
| Base clockⓘ | 2295 MHzlead | 2017 MHz |
| Boost clockⓘ | 2655 MHz | 2655 MHz |
| CUDA / Stream coresⓘ | 10752 | 21760lead |
| Ray tracing coresⓘ | 84 | 170lead |
Memory
| Spec | ASUS - ROG Astral RTX 5080 OC | ASUS - ROG Astral RTX 5090 OC |
|---|---|---|
| VRAMⓘ | 16 GB | 32 GBlead |
| VRAM typeⓘ | GDDR7 | GDDR7 |
| Memory busⓘ | 256 bit | 512 bitlead |
Power & Form
| Spec | ASUS - ROG Astral RTX 5080 OC | ASUS - ROG Astral RTX 5090 OC |
|---|---|---|
| TDPⓘ | 360 Wlead | 600 W |
| Recommended PSUⓘ | 850 Wlead | 1200 W |
| Length | 357 mm | 357 mm |
| Slot size | 3.5-slot | 4-slot |
Benchmarks
| Spec | ASUS - ROG Astral RTX 5080 OC | ASUS - ROG Astral RTX 5090 OC |
|---|---|---|
| 3DMark Time Spyⓘ | 32500 | 44000lead |
| DLSSⓘ | true | true |
| FSRⓘ | false | false |
Frequently asked
Which has more VRAM, ROG Astral RTX 5080 OC or ROG Astral RTX 5090 OC?+
ROG Astral RTX 5090 OC ships with 32GB GDDR7 vs 16GB.
Which scores higher in 3DMark Time Spy, ROG Astral RTX 5080 OC or ROG Astral RTX 5090 OC?+
ROG Astral RTX 5090 OC scores 44000 vs 32500.
Which draws less power, ROG Astral RTX 5080 OC or ROG Astral RTX 5090 OC?+
ROG Astral RTX 5080 OC draws 360W TDP vs 600W.
Spec-level deep dives
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