Cpu temps jumping to high, need help

[shogun88]

I need help with a problem I've had since I bought Phenom II X3 720 2.8ghz with no overclocking whatsoever. For some reason I can easily get idle temps between 23-30C but when any bit of stress is applied, my cpu temp increases by a lot and I can't seem to understand why. I had just bought an AC Freezer 7 pro for it, and it was actually idling my CPU at 23C while the fan was dead. I didnt even know since it ran when i started up..... So just the heatsink itself was idling at 23C and hitting 53C while playing BF:Bad Company 2 for a good 1 1/2 hours. That shows its potential with the fan...

So I remove the HS and face it towards a 120mm fan on the top of my case, apply thermal paste, reattach the HS's fan and what do you know, it starts working. I figured if the idle temps were 23C with no fan, then the idle temps should be amazing with the fan working at full speed, plus the 120mm fan above. Well not exactly, and now idle temps are now around 30C. I play Mass Effect 2 and start hitting +50C and BF: BC2 i hit almost 60 versus the 50-55C i was getting while the fan was off. It's been acting very sensitive and I'm wondering is there something wrong with it or does it sound like I'm not properly seating and applying thermal paste?? I've never done it except for the last 4 times, maybe moving the HS after seating smudged paste the wrong way?? Thanks for your help!!!

 

[apache_lives]

thermal paste should only really be used once then replaced - thats the first place to look

 

[shogun88]

ive cleaned off the HS and cpu with alcohol and reapplied fresh thermal paste each time. are you saying i cant use the same brand of thermal paste more than once??