High CPU Temps due to Faulty PSU?

[TheEnosFam]

I was just wondering if my high CPU temps could be due to a faulty PSU? I have recently just bought the following

Asrock m3a770de mobo
amd 1090t cpu
hd 5770 gpu
Artic Cooling freezer 7 pro rev 2 4gb ocz gold 1333mhz
all of which are new but I have a used 700w PSU powering it all.

Just wondering if the PSU is a bit faulty if it could raise my CPU temps as i have reseated my heatsink about 5 times now and now matter how i do it i get the same temp.

Also when playing games like Crysis 2 and Medal of Honor my PC just freezes up and i have to restart using the reset button.

Running prime95 for about 5min my CPUTIN is 70c and each core temp will be about 61c. I don't let it go any higher as i am afraid of doing any damage.

The air flow is fine as i have 4 80mm on the side panel. 120mm at the front and rear and a 140mm on the top.

Any help is greatly appreciate.

Regards,
Ben

 

[TheEnosFam]

To be honest I don't know the make and model of the PSU as when i bought it used off ebay the auction said it was a 650W CIT PSU and when it arrived said 700w on it so i didn't complain just kept it. The air flow should be great I have 1x120mm front intake 4x80mm side intake 1x120mm rear exhaust and 1x140mm top exhaust. The fan on the AC7 blows up into the top exhaust fan. Also have a bottom mounted PSU so the heat from that blows out of the case.

I use isopropyl alcohol with a q-tip to clean the CPU. I applied a very thin layer of TIM to the chip and did my best to make sure it was smooth across the top.

Would i be better using the retail heat sink for now until i can get a fenrir or something a bit better?

As always thanks for the help and comments.