I currently have a Asus 7950 dcuII @ 950 MHz.
Since a friend of mine will be upgrading soon he will give me his old 7970 for free. The 7970's model is a Sapphire 7970 3GB GHz edition.
I know that it is possible to crossfire a 7950 with a 7970 since the 7970 will just be "downgraded" to a 7950.
Has anybody tried this already?
PS: I have a 750 Watt 80+ gold psu from seasonic, so the psu shouldn't be a problem.