Prime95 download version 25.11
Download Prime95, 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.
For Windows 95/98/Me/NT/2000/XP/Vista/Win 7.