I put the 620w in there, for future upgrades I guess. But the 500w will do fine.
Yeah, I hear ya. I figured as much. But, you linked a non-SLI mobo and it's socket 775 with a 65nm CPU on that list... The max watts that PC would require would be about 350w, even with an 8800GTX.
For future reference, check out this PSU calculator. They have recently updated it and it's pretty darn current now.
eXtreme Power Supply Calculator Lite v2.5
Very accurate and very user friendly.
So if I upgrade my mobo, C2D E6600. 2GB ram & GTX can I use my current PSU without problem or do I need to buy a new one?
^^dude, you're buying a new rig, not upgrading^^
depends on which mobo you get.
likely it will require an 8 pin cpu power connector.
which that psu probably doesnt have (mine doesnt either)....so you will have to get a new psu, or an adapter. i have the adapter, but...meh.
or you can run it on 4 pins and see what happens. probably will work...but "not suggested" by the manufacturer. lol like overclocking.