What were the best CPUs ever made and the worst? Everyone says the Netburst architecture were Intel's worst CPUs. But I had the original Pentium 4 when it came out and I remember it being one of the best CPUs. I had 2 Pentium 4s and a Pentium 3 at that time. I also had the AMD 64 3600+ and that was a really good gaming CPU. I think the AMD X2 4400+ was the first AMD dual core and one of the best CPUs. I never had that one. AMD Bulldozer was a step backwards from AMD Phenom II. What are the best and worst in your opinion. I say 1998 because CPUs started chaning a lot since then.