[vikeor]

does 939 really run cooler? i wouldnt think so cuz the CPUs are moreless the same as 754 only that they have a built in dual channel controller hence more transistor = more heat and more pins. Theres a nice article about Cpus from 1995-2005 on www.tomshardware.com take a look at it. It tells about s754 and 939.