From: davem@hp-lsd.COS.HP.COM (Dave K. Martin)
Date: Sat, 6 Apr 1991 07:52:07 GMT
Subject: Re: Opinions and Cold Hard Facts Requested
Message-ID: <19620019@hp-lsd.COS.HP.COM>
Organization: HP Logic Systems Division - Col
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-col!hpldola!hp-lsd!davem
Newsgroups: comp.sys.amiga.hardware
References: <erk.1724@americ.UUCP>

Well, I can't answer all of your questions but I can give an opinion 
or two :-) :-)

I currently have a 25 mhz Mega Midgit Racer with 0k static and 0m dram
installed.  It does make a difference in some operations on my A-2000.
If I'm working out of ram (7 meg of 16 bit ram), unarcs, GIF conversions,
and such operations run between 1.5 and 2.5 times faster.  Most of the
applications that I use, ProWrite, Photon Paint, etc don't seem to be 
noticiably faster.  Also anything that involves disk access won't change
very much.

From what I've read, adding the dram will make more of a speed difference
than the sram will.   Adding both will give the best results.  

The following comes from the MMR User's manual:

The CSA Mega-Memory (tm) DRAM daughter-board is available in two different 
versions: one that has sockets for DIP memory chips and fits in the A1000
and A500, and one that has ZIP memory chips soldered directly into the 
board and fits in the A200000 as well as the A1000 and A500.
The A1000/A500 board will work in an A2000 but hangs out past the side
of the system precluding reinstalling the cover.

Soon, I hope to be able to report on how much effect 2 meg of 32 bit ram has.
Then I can try the cache and burst options also.

Hope this has answered at least one question.

(Give up my MMR?  Absolutely not! ....Well, maybe for an '040 board. ;-)
davem
test som