Ok, so I swapped from the 512mb Geforce 8800GS to the 320mb Geforce 8800GTS and also went from WinXP to Vista64 (mainly so I could make use of the 4gb of ram since XP only sees 3)
Not sure if its suposted to be like this or not, but my frame rates have actually dropped
World of Warcraft went from avg ~40-50fps with the old setup, to about ~20-30fps with the new setup. All drivers and updates current. Am I doing something wrong?