Intel currently make faster CPUs. I started out with Intel (386, Pentium, Pentium II), then switched to AMD when they became the performance leaders (Athlon, Athlon 64), then back to Intel once they were getting over the Pentium 4 mistake (Pentium M, Core 2). If AMD produce the fastest processor next time I buy a new PC, I'll probably go for an AMD processor, provided the platform is fine.