What kind of hashrates are Radeon cards getting? Maybe it's worth buying an ATI card so I have both nVidia and ATI accessible. Could be useful for Stacycoin and more!
People reported up to 400 MH/s for the fastest card and when I restart I can check this. I have linux with 290x and Titan and it was a pain to isntall them. In the end I had to remove the AMD, install everything related to CUDA and nvidia and then put back the amd and install the rest. Fro the amd you need to install the opencl and I had to use several versions before I got one which worked with cgminer 3.7.2 (3 for keccak).