[plug] Hardware: RAM questions

[Craig Ringer]

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>BTW, does the cache on a SCSI controller card make very much difference? It
>currently has 32Mb but is upgradable to 128Mb for less than AU$60... is it
>worth upgrading? (I would just include it with the system RAM order so
>postage costs won't be a prob.)
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Varies. If you're doing only a couple of tasks at a time, there isn't 
much point in increasing the cache. If, howerver, you have 20 users over 
ethernet running netboot workstations... (thats me) yeah you want *lots* 
of cache.
Basically, with that much RAM I wouldn't bother. Most of it'll be used 
for disk cache anyway, and you are unlikely to be writing enough data to 
disk to make write-back caching worth the (considerable) risks.

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