Head over to<a href="http://swox.com/~tege/results.html" target="_blank">GMP Bench</a> to see a direct comparison of G4s to P4s , Althons, Itaniums, Alphas, Power3s, and Power4s.

These benchmarks are not the same as SPEC, but part of me thinks that they are more honest as it is completely open source. For the base functions, i.e. multiply, divide, add, subtract, and a few others, developers (or manufacturers for that matter) can supply assembly versions of those functions to eke out better performance. Granted, at this time there are only a small number of benchmarks available, but that will be expanded over time.

BTW, the Power4 1.1 GHz is only surpassed by an Alpha 21264 at 1 GHz and an Althon 2200+. The P4 at 2.4 GHz falls behind it. The G4 667 MHz is 1/4 the speed of the listed Power4.

Enjoy.

[ 03-13-2003: Message edited by: Fran441 ]</p>