ATI 5870+5850 CrossFireX
I’ve been playing around with two mismatched GPU’s in CrossFireX. Namely a reference model HD5870 from Asus and a custom PCB HD5850 from XFX. Perhaps not the most common setup, as most would much rather go for two identical cards. But if you happen to stumble upon the odd card, then why not give it a try, right?
Hardware & Software
AMD Phenom II x6 1090T BE
Kingston HyperX LoVo 1866 MHz 2x2Gb
Asus ATI Radeon HD5870 1Gb and XFX ATI Radeon HD5850 1Gb
Windows 7 x64 Ultimate
Catalyst 10.6 + 10.6 CFX profiles
Below you’ll find a few game runs together with 3DM06 and Heaven Benchmark. For the game benchmarks I used Fraps to record 30 seconds worth of data (MIN, MAX and AVG FPS) while navigating a set route in-game. The average values where then calculated from multiple runs, which is shown in the charts. I included the results from a single HD5870 as well, for reference.
Visible gains in all tested games and benchmarks, so no doubt its a viable option running mixed cards. But would have been interesting to see how this setup would stack up against two 5850′s. I’d still recommend running matched cards where possible. But as mentioned at the top, if you happen to have an extra card just lying there collecting dust or get the chance to get one real cheap, then go for it!