From: David Ross (ross_at_math.hawaii.edu)
Date: Mon Sep 23 2002 - 15:41:14 EDT
> a couple of days ago I received a 64MB memory extension from Crucial that
I
> plan to insert in a 380ED so that it will have a total memory of 80MB.
> However, I recently read that certain mainboards cannot chache more than
64MB
> of main memory and that system performance will be slowed down
considerably
> when more memory is installed. Now, can anyone please tell me whether this
is
> true for the 380ED (OS is Win95b)?
I think that "considerably"="5-10%" here, and is more than offset by the
speedup moving up from 16megs of RAM!
The problem is that the lower 64megs of memory are cached, but the OS loads
itself from the top down, and so any OS calls are uncached and slow.
If the 380ED suffers from this problem - I don't know that it does - you
might be able to get around this by creating a 16mb ramdisk in the upper end
of memory (in DOS, before Windows loads); your best bet is to scout around
for some such ramdisk software, and run some benchmarks with and without.
- David R.
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