NVIDIA - GeForce RTX 4090 vs AMD - Radeon RX 9080 XT

These two are nearly even on the Mars Score (80.3 vs 80.1). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.

Pick the GeForce RTX 4090 if you care most about cuda / stream cores and dlss. The biggest gaps in its favor are cuda / stream cores, dlss.

Pick the Radeon RX 9080 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 tdp, boost clock, 3dmark time spy.

Both ship with comparable vram, memory bus, ray tracing cores, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.