🚀 go-pugleaf

Chris wrote:
> 
> On Tue, 13 Oct 1998 02:38:52 -0500, "Michael Lee Yohe" <myohe@cs.uah.edu>
> wrote in comp.os.linux.hardware:
> 
> >One thing: Intel clock locked the Celeron processor.  You can't overclock
> >the Celeron (a) processors because the L2 cache (128KB) embedded within the
> >core of the processor runs at full processor speed.  550MHz would take out
> >the cache in a heartbeat (Intel has many problems keeping the cache stable
> >at 333MHz).
> 
> The "clock lock" on the P-II CPU is accomplished by having the motherboard
> sense whether one of the CPU-card pins is grounded or open.  You can
> switch the Celeron to 100MHz mode by opening that circuit, whether by
> cutting a trace or covering the pin with an insulating material.
> 
> The Celeron does not have an L2 cache, which is exactly why it's such a
> hot item for over-clockers.  I have heard of others getting the 333MHz
> Celeron to run reliably at 450-500MHz, but this is the first claim of
> 550MHz I've seen.


Close, but not quite. The Celeron 300A and 333A both have 128Kb on chip
(the cache runs at chip speed). My 300A @450 is slightly faster than a
P2-450. Of course, one could overclock a 450 and see what happens..but
why take chances with a $600 chip? 300A cost me $140.

The overclocking happens not by increasing the clock multiplier which is
locked at 4.5x. To overclock a locked chip, increase the bus speed. See
http://www.tomshardware.com.

David
--      
    David Poythress                               dp@qni.com
       
      "Grammar, which controls even kings ..." --Moliere