I recently upgrade a CPU from Celeron D 331 (256K Cache, 2.66 GHz, 533 MHz FSB) to a Pentium D 950 (4M Cache, 3.40 GHz, 800 MHz FSB). I know it's a mediocre cpu but that's best my motherboard can support.
I tested it with the Celeron D stock cooler and temp was around 70C at idle. So I replaced...