rec.autos.simulators

This kind of over-crocking and the word "Stable" is an oxymoron.

I've had two PII300's, and neither of them would even stay up at 350Mhz.

And the new C400A's ain't all they're cracked up to be.  At least the
one I tested wasn't.  Comparatively, it performed like a PII266.

-Larry

A P2 is very, very POOR at overclocking.  A Celeron is MUCH more likely
to be stable at speeds higher than it is rated for.

In a P2, the cache is on separate chips.  While the P2 core is much more
likely to be capable of running at higher speeds, the cache chips are
running very close to their limit.  When you overclock "a P2" it's the
cache chips that overheat and fail.

In a Celeron, the cache is on the same silicon as the CPU itself.  And it
has nearly the same headroom as the CPU.  Also, it's much easier to keep
the entire package cool enough to run.

I read this once on (I think) http://www.overclockers.com.  
http://www.tomshardware.com may address the issue, too.

Mighty

Actually the L2 cache chips in the P2s are specificially matched to the half
the speed of the P2 core.  So yeah, it is the cache chips that make the P2s
very un-overclockable.  Take my P2350...works fine at P2400, but thats it.
Disable the L2 cache and I can get it running at 4.5x124=558.  Noteable
exception to all this was some particular ss# P2300s which were really
P2450s that were only being run at 66mhz (4.5x66=300) FSB speeds.

That`s simply not true as it is, get a P2-266(sl2w7) and run it at 448 whit
no problems, or get a P2-300(sl2W8) and run it at 504-540Mhz, mine was
running at 540, whit 2.2V, and it wasnt even warm !
SL2 series uses cache chips previusly designed to use in 400 and 450 cpus !

Sure they do...but not all P2 created to be equal !

Celeron generates a LOT more heat then the regular P2, and P2-400, 450 is
cache cooled !
you can also modify the 266, 300, 350 models to be cache cooled !

Thanks,
Tilus

-Larry

Adam