🚀 go-pugleaf

In article <80ttgr$1aq2@gamma.dmz-eu.st.com>, Dave Smith
<dsmith@bristol.nospam.st.com> writes
>In article <f6ps08.c43.ln@stravinsky>, anahata@freereed.demon.co.uk wrote:
>|> Overheating is a separate problem.  It can be a consequence of overclocking,
>|> and overheating can cause errors, but that's not the only reason why an
>|> overclocked device goes wrong. If the logic can't respond fast enough to
>|> have the right data at the output when the next clock pulse arrives, there
>|> will be errors, simply because the internal logic can't move fast enough (at
>|> any temperature).
>
>Rubbish (sort of).  Device Speed is always a function of temperature, i.e. the
>hotter it is, the slower it runs.  Extra cooling in overclocked machines has two
>functions:
> o Stop the device from exceeding a safe temperature limit, beyond which the 
>chip
>   can be physically damaged
> o Keep the device as cool as possible, to maximise the speed at which it can 
>run
>   The colder a device is, the faster it will run.
>
>A device which will only run at it's rated speed with normal cooling will be 
>able 
>to run faster if you can keep it cooler.  This is the reason why the Cool Athlon 
>machines can run at such ridiculously high clock speeds, because they have a
>built-in refrigeration unit to keep the CPU very cold.
>
>
You don't appear to have taken anything other than higher clock speed =
higher power dissipation into account. There are a few other reasons a
device has a clock limit, parasitic capacitance for example...
-- 
|Gav|

ICQ# 19875282
gavin@provocative.freeserve.co.uk