Windows only.
> Oh and we're using Windows because games only exist for it, and I can't get the setup to work on OSX (haven't tried too much though).
> Oh and we're using Windows because games only exist for it, and I can't get the setup to work on OSX (haven't tried too much though).
The newest cards need to be flashed to Mac firmware. For example, you can buy pre-flashed GTX 770s like this:
http://www.ebay.com/itm/Nvidia-GTX-770-2-GB-for-Apple-Mac-Pr...
http://wiki.osx86project.org/wiki/index.php/HCL_10.8.4#Graph...