Amd x4 phenom 965 be 3.4 ghz,
Asus mb.
Msi hd 6670 1 gb ddr5 gpu
250 hdd
4 gb ram
18.5 viewsonic led
So what the psu watts that i shud buy if i am
1)overclocking
2)not overclocking.
Thanks
Your system will draw about 400W under peak load, if you overclock the processor to 4Ghz at 1.5V vCore.
With that being said, I suggest you Corsair CX430 V2 or even better, Seasonic S1II 520W.
FSP Saga II 500W at the lowend or Seasonic S12-II 430W at the upper end. you can go for better models but these 2 should be fine if you don't have plan to plug in a highend GPU later.
Seasonic S12II 520W @3.6K
Trust me, your O/C'ed system will never eat more than 400W.
CX430 is an under-rated unit to maintain efficiency. It can actually deliver well over 500W of current without failing.