Not meaning to hijack... but hopefully this is relevant in a Two GPU thread.
I take it that multiple video cards in a mining rig do not need to be identical nor do they need to be linked via crossfire... is this assumption correct?
Lunokhod
Correct.
2 rigs here ...Been swapping back and forth to get a happy medium between speed and Heat.
Found this to be the best combo:
Rig one. 6870 (Monitor pluged into) & a 7970
Rig two = 6870 (monitor) & a 7870
Win7 X64 NO Crossfire (it slows the hash rate down)