ASUS - ROG Astral RTX 5080 OC vs AMD - Radeon RX 7900 XT

The ROG Astral RTX 5080 OC is the clear pick on raw spec strength, leading by 10.3 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 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, boost clock, among others. The single most decisive one: CUDA / Stream cores — 100.00% more. 10752 vs 5376.

Pick the Radeon RX 7900 XT if you care most about tdp / vram. Its strongest claims are tdp, vram, memory bus. The single most decisive one: TDP — 45.00 W less. 315 vs 360.

Both ship with comparable ray tracing cores, so those specs do not separate the two — focus on the differences below.

Bottom line: the ROG Astral RTX 5080 OC is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.