AMD - Radeon RX 7800 XT vs AMD - Radeon RX 7900 XT

The Radeon RX 7900 XT edges ahead on the Mars Score (63.9 vs 67.2), but the 3.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Radeon RX 7800 XT if you care most about tdp / boost clock. The biggest gaps in its favor are tdp, boost clock. The single most decisive one: TDP — 52.00 W less. 263 vs 315.

Pick the Radeon RX 7900 XT 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. The single most decisive one: CUDA / Stream cores — 40.00% more. 5376 vs 3840.

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

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.