Yeah, first post! I've got some major heat issues with the AMD 955BE. I am running a 3.6Ghz clock (200x18 @1.4V) on the stock cooler. Based on the overclocking guide I was reading, it said that temps don't matter, and if it gets to hot, the BIOS would shut the computer off automatically before any harm is done.
I found this baloney. I recently discovered that I failed Prime95 in about 1 minute (shutdown), so I check the temps. 70c after 1 minute!! This was insane to me because I had been running this clock for months with no problem. Turns out that I was using Cool&Quiet as a crutch to underclock the system, and reduce apparent normal operating temps. I've now turned that off.
So I ordered some AS5, cleaned the old stuff off which was extremely overapplied, tinted, and applied the paste. I noticed that the surface of the stock cooler was super rough, but I didn't have anything for polishing metal. Temps were still high, so I checked the paste and there wasn't enough on there (covered only the center of the chip), so I wiped and reapplied.
After a few days, my temps are 45c idle (40c idle with no Qfan(Qfan is the BIOS fan controller on ASUS motherboards)), and 64c-65c 100% Large-FFT load. Why so high?
The problem that I have is that my stock HSF can seemly only reach 3500-3800rpm. I know that it is capable of more than that! One time, I shook the computer really hard and the RPMs on the fan reached 4500 (that trick doesn't seem to work anymore), but Qfan quickly adjusted the PWM to compensate or it just slowed down again. With Qfan off and on, it seems to hover in the 3000s. I've heard of the stock coolers reaching 5000s from other people on this forum. Also, the fan is blowing air into the heatsync. Shouldn't it be pulling hot air away, blowing it into the case? It is blowing hot air right onto the CPU!!
If you are wondering about the case temp and case fans: I have 4 case fans that keep the inside a chill 33c (Motherboard temp sensor).
Ambient temps are standard: 69F-72F