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AMD Radeon RX 6800 vs AMD Radeon RX 7900 XT: Comparison
AMD Radeon RX 6800 and AMD Radeon RX 7900 XT separate most on memory bandwidth: AMD Radeon RX 6800 at 512 GB/s, AMD Radeon RX 7900 XT at 800 GB/s, 36% in favour of AMD Radeon RX 7900 XT. TDP splits them by another 26%, this time favouring AMD Radeon RX 6800. They match on 8 other specifications, including gpu brand, product type and board partner. In Blender Cycles (GPU) the AMD Radeon RX 7900 XT scores 3,626 against 1,872 for the AMD Radeon RX 6800, a lead of 48%.
Specs
| Specification |  |  |
|---|---|---|
| GPU Brand | AMD | AMD |
| Product Type | Desktop Add-In Card | Desktop Add-In Card |
| Series | Radeon RX 6000 | Radeon RX 7000 |
| Board Partner | Reference | Reference |
| VRAM | 16 GB-20% | 20 GB |
| Tier | High End | High End |
| Memory Type | GDDR6 | GDDR6 |
| Boost Clock | 2105 MHz-12% | 2400 MHz |
| Ray Tracing Support | Yes | Yes |
| TDP | 250 W | 315 W-26% |
| Architecture | RDNA 2 | RDNA 3 |
| Card Length | 267 mm | 276 mm-3% |
| Slot Width | 2 | 2.5-25% |
| Compute Blocks | 60 | 84 |
| RT Cores | 60 | 84 |
| Game Clock | 1815 MHz | 2000 MHz |
| Memory Bus Width | 256 bit-20% | 320 bit |
| Memory Bandwidth | 512 GB/s-36% | 800 GB/s |
| Cache Size | 128 MB | 80 MB |
| Recommended PSU | 650 W | 750 W-15% |
| Power Connector | 2x 8-pin | 2x 8-pin |
| DisplayPort Version | DP 1.4a | DP 2.1 |
| HDMI Version | HDMI 2.1 | HDMI 2.1 |
| MSRP | 579 | 749 |
| Launch Date | 2020-11-18 | 2022-12-13 |
| Stream Processors | 3840 | 5376 |
| Source URL | https://www.amd.com/en/products/graphics/desktops/radeon/6000-series/amd-radeon-rx-6800.html | https://www.amd.com/en/products/graphics/desktops/radeon/7000-series/amd-radeon-rx-7900xt.html |
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 6800
8 / 10 Expert Rating
A solid high-end pick if its price and 16GB VRAM allocation match your target resolution.
AMD Radeon RX 7900 XT
8 / 10 Expert Rating
A solid high-end pick if its price and 20GB VRAM allocation match your target resolution.