Is 550W too much for my build?

[zaflisa]

This is my future build: http://pcpartpicker.com/p/6RhRyc

 

I was wondering if the 550w power supply was a bit too much. I don't really want to change my power supply anytime soon, and plan on overclocking, but I know that too much wattage can sometimes means a decrease in performance. Will this be the case here? Thanks!

 

Edit: Yes, I read the "how much wattage do you need?" post, just wanted to clarify, in case.

[Faceman]

550W is plenty for that build. 

 

For $65, I would buy the EVGA SuperNOVA G1 650W

[Arc_Jester]

There is no such thing as to much wattage and having extra wattage has no effect on PC performance as the PC will only use what it needs however PSU efficiency depends on how much load is put on the PSU, ideally in order to have the best efficiency the PC load should be around 50% of the PSUs total wattage for example if you have a PC that needs 325w to run, a 650w PSU would be the most efficient at supplying the needed wattage.

 

To answer your question, most single GPU PCs have 500w PSUs so your just fine with the 550w there is no need to change.