New computer overclock

Yesterday I put together my new computer and installed Windows XP. Today I took a screen shot of its speed settings at stock speeds. The picture says it all. One thing that confused me for a while was my DDR2-800 was running at 371MHz instead of the 400MHz I was expecting. It turns out that if the CPU is running with a multiplier of 13x then the divider for memory is 7 and not 6.5 because it was designed to be integer divider. The CPU and system temperatures are looking good. The room is at 25C and the system temperature is at 37C with CPU at 31C. The new harddrive tells me its temperature is at 38C which is like the system temperature.

I got a black screen when I try to run Speed Fan while these hardware monitors were still running. Maybe too many things try to poll the system temperature and fan speed and caused a crash.

I overclocked it to 2.8GHz and so far it still runs and the temperature is only 1C higher. Interestingly CPU core0 is 10C higher in temperature than core1. This is true still when I load the CPU and they go up to 58C and 48C. I found some people saying the CPU core temperature reporting is wrong in this generation of CPUs. I guess the motherboard CPU temperature sensor is more trustworthy and it shows 53C when I load the CPU with Prime95. There is a third temperature sensor on the motherboard and it starts at 80C at idle and 108C at load. That is really odd. I think it is for the integrated GPU temperature but I am pretty sure it's not that hot.