By the way, here's a "real world" example of the performance benefits to using the Intel compiler on a "real" program which doesn't seem an obvious beneficiary from Pentium 4 optimisation: <http://dev.mysql.com/tech-resources/articles/intel-compiler-casestudy-mysql.pdf> These are serious gains, people. It's like cranking up the clockspeed from 3GHz to 3.6-4.2GHz for just one additional line in your configure command. [*] If you're tired of CPUs which give nuclear reactors a run for the thermal dissipation money and false economies of "cheaper" CPUs, I think you'll be very pleasantly surprised by 800FSB P4 performance. =MB= [*] Intel C Compiler is free to download and use but you cannot ship a commercial product built with it without paying for a licence. -- A focus on Quality.