Im now want to buy new computer and I dont know which proccesor to use... please tell me what is better :S
It invariably the processor that is announced just after you make your purchase.Usually it is twice as fast for half the price.
This is likely the wrong forum to as such a question.
Try tomshardware.com they do game reviews
The choice is often not just a CPU decision, rather a complete system decision.CPU, motherboard, RAM, Video card, etc...As well as which "game" you wish to run most often.