Re: RamFast revs (was Re: How well do you like your RamFast card?)

[fmlin@netcom.com (Fist of Fury)]

>>rev. D is a compact version of rev. C boards.  It got the supporting
>>chips into a ASIC.  So it's smaller, and produces less heat.  It's
>>upgradable to 1mb cache.  Other minor stuff include 1 jumper block
>>instead of 7 (or so) dip switches.  It can DMA into non-DMA compatible
>>memory boards if a TWGS is not present (is this a feature of rev. D 
>>or ROM?)...
>
>But what is the speed difference, or is there any, between a 256K and a
>1 MB cache?

There is a speed increase, notably when copying large number of files,
and backing up to tape drive.

With recent DRAM price increase, 1mb x 4 DRAMs 80ns are up to $23 for one
now, with some stores selling as high as over $40 (I need to upgrade
the prices on the TWGS/Zip upgrade Mini-FAQ...).  SRAMs are not affected
as much.

-- 
frank m. lin
fmlin@netcom.com