Confirmed GeForce + Radeon: Previewing DirectX 12 Multi-Adapter with Ashes of the Singularity

Gekz

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However would you believe that the mixed GPU setups are faster than the homogenous setups? Trailing the mixed setups is the R9 Fury X + R9 Fury setup, averaging 67.1fps and trailing the slower mixed setup by 3.5%. Slower still – and unexpectedly so – is the GTX 980 Ti + GTX Titan X setup, which averages just 61.6fps, some 12% slower than the GTX 980 Ti + Fury X setup. The card setup is admittedly somewhat unusual here – in order to consistently use the GTX 980 Ti as the primary card we had to make the secondary card a GTX Titan X, seeing as how we don’t have another GTX 980 Ti or a third-tier GM200 card comparable to the R9 Fury – but even so the only impact here should be that the GTX Titan X doesn’t get to stretch its legs quite as much since it needs to wait on the slightly slower GTX 980 Ti primary in order to stay in sync.
http://anandtech.com/show/9740/directx-12-geforce-plus-radeon-mgpu-preview

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