I'm wanting to know if those graphics cards above are compatible with my current motherboard. Here is the current computer I have. http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=c03054468#N87 I know the psu isnt capable of powering a gtx 760 or gtx 660 ti so I will upgrade to a 600w. The only problem I have is if the pci express slot on my motherboard is going to work with either of those graphics cards. The motherboard I have doesnt state if the pci express slot is 3.0 or not (which I doubt it is) so I'm not sure if it will work with the 3.0 graphics cards. Please help. Thanks!