Go for the Athlon 64 3200+ Winchester, it is the future just like the Pentium 4 on LGA775 is the future. If you are doing animation and stuff like that, go for a Pentium 4 on LGA775, if you are going to do gaming, then the AThlon 64 is your pick. If a computer keeps you happy for about 3 or 4 years, then why not save yourself some money and get an Athlon 64 on Socket 754 instead of 939, the 3400+ beats out the 3500+ in most benchmarks I've seen anyway.