Robert Hyatt Computer and Information Sciences
[EMAIL PROTECTED] University of Alabama at Birmingham
(205) 934-2213 115A Campbell Hall, UAB Station
(205) 934-5473 FAX Birmingham, AL 35294-1170
On Mon, 25 Jan 1999, Neil Conway wrote:
> Cris Wade wrote:
> > I also think that you should follow Tim's advice and just get a celeron A.
> > I got a celeron A 300 for just $85 US, and it nicely Overclocks to 450.
>
> This puzzles me: the reason advanced for the easy overclockability of
> the original Celeron was that it came with NO L2 cache and that the
> cache in the PII was the most speed-sensitive component.
>
> Now we have Celerons with 128kB of FULL_SPEED L2 cache and people can
> still overclock by factors like 1.5? I'd have thought the full-speed L2
> cache was closer to the limits than the half-speed stuff - weird...
>
> Anyone comment on this?
its a manufacturing issue. They don't do a special 333 (or 366) mhz
L2 for the celeron, they use the stock PII cache with 128kb rather than
512kb. Saves money by using economy of scale in production. IE it is
cheaper to make 400mhz 128kb L2 modules than it is to make some 400mhz
parts for the 400mhz xeons, and then make some different parts for the
Celeron. So you _really_ get a good deal, but it is _very_ likely that
Intel is going to stop the overclocking soon. CPUs are now clock locked
already, but you can ramp up the bus speed to overclock, _if_ your memory
and other things will run at the faster speed. But they are taking steps
to lock the bus clock also, to stop this...
>
> Neil
>
> PS: No flames please. I'm interested for technical reasons only, and I
> have no interest in actually overclocking any chips myself.
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