I've run Prime95 3 separate times on 3 separate reboots and the result is always the same, Logical core #2 completes only 1 test in the time it takes Logical core #0, #1, & #3 to complete 5. For instance, I will let Prime95 run for 5 minutes and Logical Core #2 will have completed only 1 test, while the others have done 5 in the same amount of time. Any ideas and help would be greatly appreciated.
EDIT: Other than this, the temperature seems to be a bit high as well. On air my temperatures used to be ambient +6C at idle and now they are ambient +12C.
Phenom II x4 965 Black Edition (C3 rev)
ASUS ROG Crosshair III Formula (1904 BIOS)
GIGABYTE Radeon HD 5870 GV-R587SO-1GD (F3 BIOS)
4x2Gb Mushkin DDR3-1600 (996601)
2x320Gb WD Caviar SE Raid-0
Zalman ZM850-HP PSU
Windows 7 Professional x64