well I am new kinda and im selling my current system which has a celeron 2.4 I think AMD will be the way to go but need input from others what do you run haw much ram what type dual core or 64 bit trying to only spend 600 - 800 I just dont want the lag i have on my current system media portal seem to studder and run slow then when i used my tv out it was even slower i heard pci e was way better but i want to hear from you guy also is a dual core 2.0 equal to 4ghz and what the deal with 64 bit