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AMD CrossFireX Scaling is Actually Pretty Terrible with Mixed RX Vega
Yes, this is the third post today about AMD introducing multi GPU support for RX Vega with their Crimson ReLive 17.9.2 beta drivers but it had to be made. First up, the caveats- we were only able to test the driver on a CrossFire setup involving one RX Vega 64 and one RX Vega 56 GPU so results with two of the same may differ. Secondly, these are beta drivers so there is a level of lenience here I am willing to afford to AMD. That said, the driver which came with its own announcement and internal results had to show something good and this means showing good scaling across multiple games.
The driver allows CrossFire to be enabled with a mix of the two Vega 10 SKUs, and we set about testing a few games from our GPU benchmark suite using the same testing methodology as always. Tests were done at 4K to minimize a CPU bottleneck of any kind, and the games tested include some of the most popular games today including some that AMD themselves used in the announcement. However, after a few hours of testing, we can simply not recommend using the driver for CrossFire- at least for a mixed setup as we did. More on this after the break.
The driver allows CrossFire to be enabled with a mix of the two Vega 10 SKUs, and we set about testing a few games from our GPU benchmark suite using the same testing methodology as always. Tests were done at 4K to minimize a CPU bottleneck of any kind, and the games tested include some of the most popular games today including some that AMD themselves used in the announcement. However, after a few hours of testing, we can simply not recommend using the driver for CrossFire- at least for a mixed setup as we did. More on this after the break.