Beyond3D has posted an Intel Pentium 4 3.06GHz review

Interestingly under Comanche 4 we can see that the best performance occurs with HyperThreading enabled. With HyperThreading On, the P4 3.06GHz is in the 25%-28% performance increase range over the P4 2.53GHz, which is a little better than the 21% clock speed increase. In comparison to the P4 2.4GHz the performance is over 50% better - much more than the 27% clock speed advantage.

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