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AMD Sapphire Nitro+ Radeon RX 6900 XT vs NVIDIA Zotac AMP Extreme Airo GeForce RTX 4090: Comparison
AMD Sapphire Nitro+ Radeon RX 6900 XT and NVIDIA Zotac AMP Extreme Airo GeForce RTX 4090 separate most on tdp: AMD Sapphire Nitro+ Radeon RX 6900 XT at 300 W, NVIDIA Zotac AMP Extreme Airo GeForce RTX 4090 at 450 W, 50% in favour of AMD Sapphire Nitro+ Radeon RX 6900 XT. Slot Width splits them by another 40%, again favouring AMD Sapphire Nitro+ Radeon RX 6900 XT. They match on tier and ray tracing support. In Blender Cycles (GPU) the NVIDIA Zotac AMP Extreme Airo GeForce RTX 4090 scores 11,062 against 2,603 for the AMD Sapphire Nitro+ Radeon RX 6900 XT, a lead of 76%.
Specs
| Specification |  |  |
|---|---|---|
| GPU Brand | AMD | NVIDIA |
| Series | Radeon RX 6000 | GeForce RTX 40 |
| Board Partner | Sapphire | Zotac |
| VRAM | 16 GB-33% | 24 GB |
| Tier | Flagship | Flagship |
| Memory Type | GDDR6 | GDDR6X |
| Boost Clock | 2340 MHz-10% | 2595 MHz |
| Ray Tracing Support | true | true |
| TDP | 300 W | 450 W-50% |
| Architecture | RDNA 2 (Navi 21) | Ada Lovelace (AD102) |
| Card Length | 286 mm | 348 mm-22% |
| Slot Width | 2.5 | 3.5-40% |
| MSRP | 999 | 1599 |
Benchmarks
Measured results, not specifications. Percentages are the gap to the leading product in each test.
Blender Cycles (GPU)
Blender 4.5, Blender Open Data (CC0). Median of monster + junkshop + classroom, combined samples/min.
Blender renders 3D scenes by tracing light through them, which loads every shader unit on the card at once. The score measures sustained render throughput, so it tells you what a card does in Cycles and similar renderers rather than what it does in a game. Figures come from Blender's Open Data project, which places no restriction on reuse, and we publish the median of every submission for that card on the same Blender version.
Verdict
AMD Sapphire Nitro+ Radeon RX 6900 XT
9 / 10 Expert Rating
A solid flagship pick if its price and 16GB VRAM allocation match your target resolution.
NVIDIA Zotac AMP Extreme Airo GeForce RTX 4090
9 / 10 Expert Rating
A solid flagship pick if its price and 24GB VRAM allocation match your target resolution.
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