I know that the HD 2900XT has a 6 pin and 8 pin PCI-E socket. From what I have read it seems to run fine with two 6 pin PCI-E but I am unsure of whether there are any issues associated with using two 6 pin PCI-E. Will a HD 2900XT overclock as much as with the official 6 pin and 8 pin setup or would I have to settle for a more mild overclock if I had to go for the two 6 pin setup?

Thanks, Anthony