ASUS - ROG Astral RTX 5080 OC vs NVIDIA - GeForce RTX 4090

These two are nearly even on the Mars Score (78.7 vs 80.3). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.

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 tdp, 3dmark time spy, boost clock.

Pick the GeForce RTX 4090 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 dlss, 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.