emul8 wrote:
>Is it risk free sticking a 180MHz 604 daughter board into a 7300 ?
yes, it will either work or not without damage to either component
>I have a cache (256KB I believe) and it has written on it:
>"7200/120 ONLY DOS OK"
>I can't remember for sure which Mac it came from as I have
>a 7200/75 and an 8200/120 (both are not used and stripped),
>and the 7200/75 didn't come with a cache as standard where
>as the 8200/120 did.
>My questions are:
>
>Why would it say 7200/120 only ?
It says >"7200/120 ONLY DOS OK" which may refer to the DOS series
of 7200 computers (75/90/120) of which the only one which can use that
cache is the 7200/120 DOS.
The lower speed 7200's have a EDO ram restriction and this may have
something to do with the warning.
>Does this cache not suit say a 8600 or what about a 5400/5500 ?
The 8200 is indeed a rare bird, being a tower version of the 7200
sold only in Europe
The cache dimm should work in the 8600
>---
>
>Also I have a 512KB cache from my dead PowerTower 180 and I
>take it this works fine in any of the 7300, 8600 etc ???
The cache dimm from the PowerTower MAY work in the 7300~8600(pre kansas) Macs,
however PowerComputing used 3.3v cache in some models of the PT and PCP
which will
not work.
OTOH the 'dead' PowerTower may spring to life upon removal of the cache dimm!!
>Is there a large performance difference between a 256KB and a
>512KB cache ???
Not enough to warrant the extra cost of the 512k dimm at the time.
The 1MB cache dimm DID make a substantial difference, however.
Cheers...Michael
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