Can I install a GTX760 card in the T3500 . From the specs it seems to need a 6 pin ( which the PSU has ) and a 8pin which it does not seem to have . Is there any way I can get this to work without a new PSU - which may be a hassle due to the Dell Motherboard ? Alternatively I can fit a GTX660 which will work but not as well as the 760 . Either way practically anything is better than the FX570 currently installed .