Hot northbridge can use a fan
I had similar problems when using a 990FX for Crossfire experiments back in early 2012, I just put a small fan on the heatsink and the problem was fixed. Most AMD chipsets I have seen when used on entry-level boards with just small finned heatsinks run far to hot to begin with, if you use chipset graphics, crossfire with no bridge connector, or anything like that you really need the fan. I've seen this all the way back to an Nvidia chipset supporting an AMD Athon 3200+ with the ancient Nvidia 6600 LE type graphics. If the chipset graphics were used while running up the base clock, the chipset would get so hot that severe graphics corruption would occur in about 10 minutes. The identical GPU on a separate card solved that problem and a video freeze by overloading the memory bus problem.
Originally Posted by ntt2010