mixed speed celerons?

I just tried setting up an SMP system using an ABIT BP6 and what I thought
were a pair of celeron 500's but turned out to be a 500 and 533.  The ABIT
board's BIOS only lets me set the CPU speed globally, so I set it to
500/66.  Linux (fedora core 1's 2.4.22-1.2197.nptlsmp) boots and sees 2
500mhz CPUs.  X has a weird issue with occasionally repeated characters.
i.e. ls -l might turn into ls ----llll.

Replacing the 500 and 533 with a pair of 400's appears to have made that
problem go away.  In a search for linux smp and mixed speeds, I found info
from Alan Cox in the smp howto saying to boot with "notsc" and it should
work.  2.4.22-1.2197.nptlsmp won't accept that option:

kernel: notsc: Kernel compiled with CONFIG_X86_TSC, cannot disable TSC.

so before I recompile, is that still the case and perhaps the cause of the
repeated char problem?  Celerons are cheap enough, if the mixed speed
thing will cause problems I might as well just pick up a match for one of
the 5xx ones.

----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
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