The two Navi 21s communicate with each other via an AMD Infinity Fabric link. It is worth noting that the manufacturer disabled 20 CUs (computing units) on each GPU, but still the video card turned out to be powerful.
The graphics card itself uses Apple’s proprietary MPX form factor. However, an enthusiast ran the Radeon Pro W6800X Duo on a stock motherboard with some clever modifications. It then tested the graphics card on the latest Z790 platform with a Core i9-13900K processor and 32GB (2x16GB) DDR5-6000 C30 memory.
As a result, the Radeon Pro W6800X Duo delivered 4% faster performance than the Asus Strix GeForce RTX 4080. The graphics card also outperformed AMD’s latest Radeon RX 7900 XTX by 8%. Only the GeForce RTX 4090 was able to beat the Radeon Pro W6800X Duo by a significant 27%.
Source: Ferra
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