Multiple cards

[fc_flumpker]

Can I effectively put a 7970 and a 6450 in the same box for mining?  Any special considerations (assuming power, etc. are sufficient)?

[trkmed]

I can't find good ballance. For me is seems that the system is unstable when mixing multiple cards.

[daddyfatsax]

You can put them in a rig together. As long as you don't crossfire them. Also you would need to tune each card separately, if you are gonna overclock them. 

[jamesblack]

better to use two cards are different ....