all depends on what you going to be doing with the PC, are you wanting to play games? Let us know what you intend to do with it and we'll have a clearer idea
Well the A64-3500 is clocked at 2.2Ghz and the Pentium4 530 is clocked at 3.2Ghz ... so naturally the Intel one is faster. Whether or not it's better is dependent on what you are doing.