On Wed, Oct 19, 2005 at 07:48:34PM -0400, Chuck Swiger wrote: > Glenn Dawson wrote: > >At 03:57 PM 10/19/2005, Kurt Buff wrote: > [ ... ] > >>>You want to get the same speed, FSB, and family number of Xeon, and > >>>it is preferable to get the same stepping number if possible. > > > >It's better to match the sSpec numbers...those include the stepping, > >and not all processors of the same stepping have the same sSpec. > > Intel's documentation for dual-proc and multiproc compatibility is > based on family ID and stepping #, not on the s-spec #. > > The family ID is akin to a major version number, and the stepping is > akin to a minor version number. You can get the family ID and > stepping from dmesg, you cannot get the sSpec number via that > directly. For example: > > CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2992.71-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0xf43 Stepping = 3 > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > Hyperthreading: 2 logical CPUs > > If you hunt down the right Xeon document: > > http://download.intel.com/design/Xeon/specupdt/30240216.pdf > > ...and search for "0xf43", you get: > > S-Spec CoreStepping CPUID CoreFreq FSB L2_cache .... > SL7ZF N0 0F43h 3 800 2 MB 604-pin micro-PGA > > Thanks for the tip.
-- Regards, Doug _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
