More than I need, is that a problem ?

[pchioccola]

Hi everyone,
Acording with Power Supply Calculator, I'll need at most 550 watts. But a TX 650 watts is $20 cheaper than 550 watts model.
Is there any problem in a long term ? I gonna overclock, but even so 650 watts'd be at least 100 watts more than I need.

Config: i5-3570k - GTX 660 - gigabyte z77 ds3h - 2 ddr3 sticks - cooler hyper 212

 

[FinneousPJ]

No it's not a problem other than slight variations in efficiency.

 

[pchioccola]

Best answer selected by pchioccola.