OCCT is very nice. I usually use OCCT along with Prime95 to check for stability. OCCT for a 2-3 hours to check the settings - and if everything seems fine then, I let Prime do it's work for 8-12 hours to check the long therm stability.
Originally Posted by boydyboyd
OCCT's linpack test is probably one of the most strenuous tests your likely to come across(except intel's burn test, which is exactly the same as the linpack).
But sometimes running prime95 on blend will find any faults in your RAM. Running a mix of stress tests is never a bad idea.