thanks what is u recomand psu..is 500w enough
Like the post above me Corsair is good aswell. You have two types of PSU's. Modulair and non-Modulair. Modulair is mostly used for simplicy and short cables. Non modulair is used for cable management, so it has longer cables. (most of the time).
500W is more then enough. Take a look at the brands and make your choice. Only if you want to have SLI in the future i would recommend getting a 600W.