Re: Two different GPUs in same mining rig?

Yes, you can use two different models without trouble.

Run two instances of cgminer, one for each GPU.

Make sure to disable ULPS as I just described here:
https://bitcointalk.org/index.php?topic=195550.msg2035320#msg2035320

Thanks! I had no idea about ULPS, so you just saved me many hours of frustration. :-)