Bad PSU cause low GPU usage and low fps ?

super1986

Honorable
Nov 9, 2013
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10,630
Hi
My system is
core i5 2320
HD 7990
4 gb ram
1T hhd
psu kentek 850w
during gaming i got low gpu usage ,low FPS and cpu usage always on 70-85%, and also sometime my pc freezing during play games specially in heavy games such as crysis 3 metro last light and BF 3&4
I'm wondering if my PSU cause these symptoms ?
 
Solution
No, I doubt that's it. I'd point to the low system ram(only 4 gb) as a cause for low FPS. Wouldn't cause it to freeze though. What are the temps for your 7990 like? If they are running high, that could cause it.

super1986

Honorable
Nov 9, 2013
81
0
10,630


If i put fan on auto the gpu temp reach up to 87 if i put it manually 70% temp 70 c