For overclockers, Prime95 has a feature called “Torture Test” that allows maximum stress testing on the CPU and RAM. There are several options allowing the stress test to focus on the memory, processor, or a balance of both.
Usually Prime95 will detect an error within a matter of minutes if an overclock is not stable, however many people like to let the system “burn-in” overnight to ensure long-term stability.
The benefit of this version is that it is multi-threaded and will automatically manage worker threads to fully stress all cores of your CPU.
http://files.extremeoverclocking.com/file.php?f=103
http://files.extremeoverclocking.com/file.php?f=205
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