Hd 4650 + my psu = boom?

yea your psu has too little power for the 4650, get a better psu

in load whole system takes 171 watts and card alone takes 55w in load how come is it less?

u sure bro
i have a little doubt after reading ur signature

? If you are talking about demon it relates to something else. Not even computer related.

I'm sure. You have a half decent 365W PSU. The 4650 will be fine. (if you want to troll me however I'll be happy to stop replying;)

no bro ty but also under heavy load my PSU be ok as my PSU is 2 years old now

Yup.

ok i am i am getting a used XFX hd 4650 and play like 3-4 moths and buy a whole new i5 or i7 rig ty bro

Best answer selected by usmansajid.