I'm planning on upgrading my processor from the Phenom II X2 BE to the Phenom II X6 BE, but I have a question about possible power issues.
I was using the Newegg wattage calculator to see if my power supply would be able to power everything easily with the new processor, however, I don't know whether to put my motherboard in the category of "high-end" or "regular". The reason being that the recommended wattage for a Regular mobo with all my other components with the new processor is 529W, within my range, and the rating for everything with a High-end mobo is 555W, 5 watts MORE than what I'm able to provide.
For a GTS250, EVGA recommends a 450w psu with 24a on the 12v rails.
That assumes a normal complement of peripherals. Other components affect the calculations very little.
If your psu is of decent quality, you should be good.
If you want to objectively, accurately and scientifically determine what PSU power is required for your Vid card and PC in both watts and 12v rail amps., the forum Utility link below will show you how easy it is to calculate this information and objectively determine which PSUs are quality built, reliable PSUs that can meet your needs. Be advised that the available 12v rail amps. is just as important as the total PSU wattage. You need both to be correct.