[YGkk]

Same 750w is good or a higher one should be better?

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You could get another OCZ psu...but given the issue with the one you have ,you may be better off choosing another brand psu..750 watts would be good unless you find a deal...remember the higher the amps the better,especially on the 12 volt rail..

[Veeg]

You could get another OCZ psu...but given the issue with the one you have ,you may be better off choosing another brand psu..750 watts would be good unless you find a deal...remember the higher the amps the better,especially on the 12 volt rail..

[iammykyl]

I have used this PSU calculator, > http://extreme.outer...n.com/PSUEngine
I can't see if you listed your GPU, so guessed mid range, GTX 570, fairly hungry card, allowed for medium overclocking, results were, 588W recommend Given that these type of calculators go a bit over the top. Providing you are not going to go duel GPUs, a 650W would be more than enough and still give a little wiggle room.
Choose any one, all good, > http://www.newegg.co...4^17-207-014-TS