1)   DIAG 4.61 Beta 2
DIAG, the diagnostic program is a system information program. You can get nearly all information about your hardware and software without opening your computer. Most components can be tested and/or benchmarked.

 2)   System Analyser 5.3p
System Analyser provides extensive information about your PC's hardware

 3)   Fisherman 1.1
This Program always check your processor. One or 2... 4... up to 128 !!! If one or more of your processors have troubles with Integer and/or Floating Point operations Fisherman find it, log it, say you about it BEFORE your system will be crashed!