GTX 760 And Quad Core Q9550... What PSU should I get?

[Eng Ahmad Nour]

Hi,

I'll upgrade my 9400 GT to a GTX 760 or maybe a GTX 660 (I'll decide depending on my budget).
I've a core 2 quad processor Q9550 @2.83GHZ (I think it can be overclocked)

What's the minimum power supply wattage should I get?
I don't want something expensive... nor cheap

Note: I know some of you will mention the bottleneck that may occur... I may think of upgrading my CPU later (although it will require replacing my motherboard too which means buying a new PC).. but till now, I'm planning of playing games only at about 1360x768 (That's my highest resolution here) so I think it'll not be a big deal for the quad core to handle.

Thanks

 

[Dark Lord of Tech]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($59.99 @ NCIX US)
Total: $59.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-19 09:54 EST-0500)