Download the Black Hole benchmark (Final). It tests the pure calculation speed of your cpu in double and integer (floating and integer). The bench has 3 tests, multithreaded 4 threaded and singlethreaded. Multithreaded will take all your threads to its max use, singlethreaded stresses 1 thread 100% 

Usage

First Close ALL other programs.

1. Download the app from the download in this thread
2. Extract the exe
3. Run the exe and press multithreaded test (the program can be stuck while running, just let it do his job for 1-5 min)
4. When completed that, run the 4threaded test (will last 1-2 min)
5. Run the last test, the singlethreaded test
6. Then you get the final score

Other important information

• Only for windows from xp and up (recommended)
• You need at least .NET framework 2.1
• Ram speed and latency can affect the score pretty much
• At this moment it supports up to 34 threads!