user9029: I have some 7950 and some R280, can I connect them both on one rig? Will it work normally? Or does system require all GPUs to be same?

user10329: Nope, you're good to go. You don't even have to connect them all through PCI-e. With cgminer, you can set the settings uniquely for each card. You can use any kind of adapter that would normally bottleneck GPU performance. 

9029: <p>I have some 7950 and some R280, can I connect them both on one rig? Will it work normally? Or does system require all GPUs to be same?</p>
 10329: <p>Nope, you're good to go. You don't even have to connect them all through PCI-e. With <em>cgminer</em>, you can set the settings uniquely for each card. You can use any kind of adapter that would normally bottleneck GPU performance. </p>
