Just finished a new box, Gigabyte K9A MB, AMD Phenom quad 2.8, 2 gig G-skill ram. 320 HD, ATI 4850 and a ECO water cooler for the CPU. Also a bottom mount PS with discharge out the bottom of the case and 2 case fans.

Of course the ambient temp here is quit warm, 80 deg F. and the CPU temp on the motherboard bios shows it runs constantly at about 45 C.
I installed a new version of Sandra and it shows the CPU about 6 deg C. hotter than the BIOS readout, which one do I believe?