ASUS - ROG Astral RTX 5090 OC vs NVIDIA - GeForce RTX 5080

The ROG Astral RTX 5090 OC is the clear pick on raw spec strength, leading by 15.1 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, vram, among others. The single most decisive one: CUDA / Stream cores — 102.38% more. 21760 vs 10752.

Pick the GeForce RTX 5080 if you care most about tdp. Its strongest claims are tdp. The single most decisive one: TDP — 240.00 W less. 360 vs 600.

Both ship with comparable dlss, so those specs do not 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.