CPU Hi-t Professional Edition v.2.0 is the special program intended for testing of the central processing unit of a computer on stability of operation. The program includes 4 main tests and 1 additional test. The program has the floppy, intuitively understandable interface made in modern style, and realized on English and Russian languages. The program has indicators of loading of the processor. The program allows to place 10 levels of load for each test that raises efficiency of testing. Detailed documentation on 3 formats, in English and Russian languages will allow to master the program fast.