I've got a P4 2.8ghz runs about 50c, 55-60c full load.... I need more thermal paste lol, my fan hits about 6600 rpms, but I have it dialed back to 4400 because it sounds like a wind tunnel in here.
My girlfriends PC has a 2.53ghz P4 and she's about 10 degrees cooler than I... like I said I need more thermal paste hehe.
I use MSI's core center, to monitor it came with the boards.