I thought these were pretty normal ranges. Although I don't think it's a heating problem, if the fans aren't enough, should I invest in liquid cooling? The overall case temp doesn't rise above 36 - 38°C. Also, what do you think of those voltage readings?
Your processor temps @ 65°C is too high. That could be your problem. According to AMD's website 940 spec page, 62°C is the maximum temp for your CPU. I suggest you look into whether or not your heatsink is properly seated and has good thermal paste applied.
Also, if the voltage readings are correct then yes, they are out of spec. Rule of thumb is all values should within be ±5%, especially the +12V rail. This also might be why you are experiencing random shutdowns. Random shutdowns are usually linked to poor quality power supplies. What model of PSU do you have?
The PSU you linked is way overkill for your system, though it is a good one. A good quality 500-550W PSU is more than enough for your needs. Corsair, SeaSonic, Antec, Enermax are the brands to look for.
I suggest you look first into your heatsink mounting (apply some new thermal compound!). If the heatsink is mounted correctly, the CPU may be faulty or you may want to explore a new PSU. I've personally had an AMD CPU die on me, and the symptom was crazy high temperatures so it is possible.
And finally, I ran across this thread in which some people were having similar problems with the same CPU and chipset you are using. Just something to keep in mind.
@repritchett: This is my current PSU. Wasn't too picky about what I was getting. Hard lesson learned. Totally replacing it
I haven't added thermal paste yet. Have to go get some. Just wanted to give you gents an update of where I was with this. Also, the reason why I picked that seemingly overpowered PSU is because I do have a second card ATI card (same model as the current one) not installed. I want to be able to use the Crossfire capability and I figure that this PSU will be able to handle that.
Added AT5 thermal paste. Still getting high temps on the die. Maybe I have a faulty die? Still have poor readings on my PSU. Definitely replacing that unit. Thanks all for the suggestions. Gonna call AMD and ask about their 940s. Maybe there is some recall or something that I can get a replacement. Anybody have good experiences dealing with AMD?
Ok. Haven't heard back from AMD on my proc, but I've narrowed down the issue to this S*** PSU. The +12V rail is falling off and I think it's going to die soon. I want to thank everyone for putting in their helpful advice. I'm going to get a replacement (after I make some extra cash). And I'm going to bother AMD about those temps. Still kinda hot at 51°C.