On Wed, 27 Oct 2004, Jerone Young wrote: > Try the FC3 X86_64 realease candidate (just look at archive on list) > and see if everything works out. I wouldn't mind seeing how much > slower the EMT64 is compared to a true X86_64 CPU like the AMD Opteron > :-) I have both a dual 2.2 GHz Opteron and a dual 3.6 GHz EM64T (an HP xw8200). On all of the codes that we have tested, the Opteron is between 30% and 50% faster than the EM64T. -s