Si che ho scaricato il client GPU, ho provato entrambi:
http://folding.stanford.edu/release/...a5-GPU-GUI.exe
http://folding.stanford.edu/release/...PU-Console.exe
No, non va a posto riavviando -.-
E, si, la 1600 è supportata:
GPU and OS support
Which cards are supported?
We now support serveral classes of GPU boards, including X1600, X1800, and X1900 class GPU's from ATI.