jpb@umbio.miami.edu (Joe Block) (02/18/90)
I am considering getting a Portable but (understandably) am distressed by the high price of SIMMs for it. Is it possible to use the cheap DRAM SIMMs or am I stuck with the expensive static ones? I don't care if using the DRAMS means a drastically reduced battery life, I am not planning on using it anywhere where I can't find a wall plug. While I am on the subject of SIMMs for the Portable, does anyone know of a third party source for them? Given a choice, I'd prefer to upgrade to 4 or 5 Megs of RAM instead of the inadequate 2MB Apple is offering. Thanks JB P.S. I am (obviously) not a hardware person, so please don't send me Email telling me what a moron I am for asking this question. -- Joe Block jpb@umbio.miami.edu There was a young poet named Dan, whose poetry would never scan, when told this was so, He said, Yes I know, It's because I try to fit every possible sylable into the last line that I can.
tga@eleazar.dartmouth.edu (Greg Ames) (02/18/90)
In article <1667@umigw.MIAMI.EDU> jpb@umbio.miami.edu (Joe Block) writes:
:I am considering getting a Portable but (understandably) am distressed
:by the high price of SIMMs for it. Is it possible to use the cheap DRAM
:SIMMs or am I stuck with the expensive static ones? I don't care if
:using the DRAMS means a drastically reduced battery life, I am not
:planning on using it anywhere where I can't find a wall plug.
No. One of the advantages to using SRAM, besides its lower power
consumption, is the fact that it doesn't need the external refresh
hardware that DRAM needs. Without this hardware, DRAM won't function.
I also believe the technique to address DRAM is very different than
for SRAM.
:While I am on the subject of SIMMs for the Portable, does anyone know
:of a third party source for them? Given a choice, I'd prefer to
:upgrade to 4 or 5 Megs of RAM instead of the inadequate 2MB Apple
:is offering.
I'm sure you could find the SIMM's somewhere, if you looked hard enough.
I doubt there are enough portable owners yet to cause enough demand for
the SIMM's to make them as hot an item as DRAM. I don't think you will
find bigger ones than Apple's, though. If you can, they'll cost an arm
a leg. SRAM generally has smaller capacities than DRAM, so I doubt if
anything over 1 meg is available. Anyone know for sure?
Greg
--
Greg Ames, '90 | tga@eleazar.Dartmouth.EDU
HB 1362 | ...!{harvard,linus,inhp4,etc}!dartvax!eleazar!tga
Dartmouth College |
Hanover NH, 03755 | { This space available for rent! }serizawa@unagi.Solbourne.COM (Makoto Serizawa) (02/23/90)
In article <19525@dartvax.Dartmouth.EDU> tga@eleazar.dartmouth.edu (Greg Ames) writes: >In article <1667@umigw.MIAMI.EDU> jpb@umbio.miami.edu (Joe Block) writes: >:While I am on the subject of SIMMs for the Portable, does anyone know >:of a third party source for them? Given a choice, I'd prefer to >:upgrade to 4 or 5 Megs of RAM instead of the inadequate 2MB Apple >:is offering. > >I'm sure you could find the SIMM's somewhere, if you looked hard enough. >I doubt there are enough portable owners yet to cause enough demand for >the SIMM's to make them as hot an item as DRAM. I don't think you will >find bigger ones than Apple's, though. If you can, they'll cost an arm >a leg. SRAM generally has smaller capacities than DRAM, so I doubt if >anything over 1 meg is available. Anyone know for sure? I found a Apple custom chip on the Apple's SIMM for Portable. And using 32 of 256K SRAMs. serizawa@Solbourne.COM