can't identify celeron 850

[zhu shi song]

Hi, 
  I'm using freebios-cvs , linux-kernel 2.4.18, 
mainboard winfast6300, When I use celeron 766, linux 
booted by linuxbios can identify it correctly, but
when 
I change cpu to celeron 850, linux can't identify it, 
dmsg info show the cpu is 560Mhz.  what's the problem,

please help me.
   thanks
    zhu

__________________________________________________
Do you Yahoo!?
HotJobs - Search new jobs daily now
http://hotjobs.yahoo.com/