Stefan Mileschin

Here at TR, we've long considered multi-GPU rendering something of a false grail for graphics-performance scaling. Potent multi-GPU cards like AMD's Radeon HD 7990 and R9 295 X2 have tended to deliver world-beating average frame rates in our testing, but our Inside the Second frame-time measures usually put a big fat asterisk next to those cards' numbers. That's because issues with consistent frame delivery have often made those CrossFire-on-a-stick cards feel much less smooth in practice than their astronomical frame rates might suggest.

http://techreport.com/news/30761/amd...or-dx12-titles