That depends, are you using it for basic use or gaming? If it is for general basic use then either one of them should do the job for normal everyday task. Such as downloading music, watching movies or videos, etc. If it is for gaming, you might be able to play some games pretty well but as far as high end grahpic games like Gand Theft Auto 4, Grid, Crysis. You are going to need a more powerful CPU.