Well, right now i'm writing from the computer with the gtx 480, the main hard drive is connected to sata 2 without problems.
@Timop The Cool Master power supply is the M700.
But yes this case is small.
Soon i will get a new case, mobo and i'm thimking an I7. but for now this will help me to edit some hi def video and finish a project that was just horrible to edit with a smaller video card.
Thanks to everyone for your posts.