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AMD Radeon RX 6900 XT vs NVIDIA ASUS ROG Strix OC GeForce RTX 4090: Comparison
AMD Radeon RX 6900 XT and NVIDIA ASUS ROG Strix OC GeForce RTX 4090 separate most on memory bandwidth: AMD Radeon RX 6900 XT at 512 GB/s, NVIDIA ASUS ROG Strix OC GeForce RTX 4090 at 1008 GB/s, 49% in favour of NVIDIA ASUS ROG Strix OC GeForce RTX 4090. Slot Width splits them by another 40%, this time favouring AMD Radeon RX 6900 XT. They match on 4 other specifications, including product type, tier and ray tracing support. In Blender Cycles (GPU) the NVIDIA ASUS ROG Strix OC GeForce RTX 4090 scores 11,062 against 2,603 for the AMD Radeon RX 6900 XT, a lead of 76%.
Specs
| Specification |  |  |
|---|---|---|
| GPU Brand | AMD | NVIDIA |
| Product Type | Desktop Add-In Card | Desktop Add-In Card |
| Series | Radeon RX 6000 | GeForce RTX 40 |
| Board Partner | Reference | ASUS |
| VRAM | 16 GB-33% | 24 GB |
| Tier | Flagship | Flagship |
| Memory Type | GDDR6 | GDDR6X |
| Boost Clock | 2250 MHz-15% | 2640 MHz |
| Ray Tracing Support | Yes | Yes |
| Architecture | RDNA 2 | Ada Lovelace |
| Card Length | 267 mm | 358 mm-34% |
| Slot Width | 2.5 | 3.5-40% |
| Memory Bus Width | 256 bit-33% | 384 bit |
| Memory Bandwidth | 512 GB/s-49% | 1008 GB/s |
| DisplayPort Version | DP 1.4a | DP 1.4a |
| HDMI Version | HDMI 2.1 | HDMI 2.1a |
| MSRP | 999 | 1599 |
| Source URL | https://www.amd.com/en/products/graphics/desktops/radeon/6000-series/amd-radeon-rx-6900-xt.html | https://rog.asus.com/graphics-cards/graphics-cards/rog-strix/rog-strix-rtx4090-o24g-gaming-model/spec/ |
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 Radeon RX 6900 XT
9 / 10 Expert Rating
A solid flagship pick if its price and 16GB VRAM allocation match your target resolution.
NVIDIA ASUS ROG Strix OC 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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