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NVIDIA GeForce RTX 4090 D vs AMD Sapphire Nitro+ Radeon RX 6900 XT: Comparison
NVIDIA GeForce RTX 4090 D and AMD Sapphire Nitro+ Radeon RX 6900 XT separate most on tdp: NVIDIA GeForce RTX 4090 D at 425 W, AMD Sapphire Nitro+ Radeon RX 6900 XT at 300 W, 42% 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 GeForce RTX 4090 D scores 11,062 against 2,603 for the AMD Sapphire Nitro+ Radeon RX 6900 XT, a lead of 76%.
Specs
| Specification |  |  |
|---|---|---|
| GPU Brand | NVIDIA | AMD |
| Series | GeForce RTX 40 | Radeon RX 6000 |
| Board Partner | NVIDIA Reference (China-market AIB partners: ASUS, MSI, Gigabyte, Colorful, Galax) | Sapphire |
| VRAM | 24 GB | 16 GB-33% |
| Tier | Flagship | Flagship |
| Memory Type | GDDR6X | GDDR6 |
| Boost Clock | 2280 MHz-3% | 2340 MHz |
| Ray Tracing Support | true | true |
| TDP | 425 W-42% | 300 W |
| Architecture | Ada Lovelace | RDNA 2 (Navi 21) |
| Card Length | 304 mm-6% | 286 mm |
| Slot Width | 3.5-40% | 2.5 |
| MSRP | 1599 | 999 |
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
NVIDIA GeForce RTX 4090 D
8.7 / 10 Expert Rating
A slightly cut-down RTX 4090 that's now been succeeded by the RTX 5090 D - still a very fast card for anyone who already owns one or finds one at a discount.
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.
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