In the third part of our NetBurst Architecture investigation trilogy we are going to reveal the details of the Replay mechanism Implemented in Intel Pentium 4 processors, which Intel keeps quiet about. This particular mechanism and its working principles explain why Pentium 4 processors perform pretty slowly, despite their high working frequenciesThe whole article about Intel's NetBurst architecture can be found here
Intel's NetBurst architecture - Replay and Performance

X-bit Labs published the last part of its trilogy on the NetBurst architecture of the Intel Pentium 4 processor.