This work gives the overview of particularities of parallel programming for the personal computer and the observation of the possibilities and advantages of the Hyper-Threading technology and new Pentium 4 processors. The work proves that the creation of the Hyper-Threading technology and dual-core processors helps to make parallel computing more available for the usual personal computer. Parallel programming becomes not only the way of solving difficult tasks but gives a real possibility to speed up the work of personal computer and to use its hardware resources more effectively. The work gives the review of the possibilities of creation of parallel programs by using OpenMP standard and particularities of the application of the set of SSE2 processor commands. The results of practical tests are given. They indicate that the floating point computing is more effective without using of multiple threads and Hyper-Treading technology shows best results working with different types of processes or working with new processor possibilities.