dsill@ark1.nswc.navy.mil (Dave Sill) (07/12/89)
We have a 1.5MB NCD16 that we'd like to upgrade. Does it make sense to go all the way to 4.5MB or is 3MB sufficient. (Don't laugh, I *have* to ask.) In the 1.5MB configuration, the NCD16 has 1/2MB on the motherboard and four 256k SIMMs occupying its four SIMM sockets. To upgrade to 4.5MB requires replacing all four 256k SIMMs with 1MB SIMMs (at $450 each). To upgrade to 3MB, only two 256k SIMMs would be replaced. Is it true that "A SIMM is a SIMM is SIMM"? Could I buy someone else's 1MB SIMM? Has anyone done this? I need replies as soon as possible, of course. -Dave Sill dsill@relay.nswc.navy.mil
djg@pyrnova (Don Giberson) (07/14/89)
In article <9@ark1.nswc.navy.mil> dsill@ark1.nswc.navy.mil (Dave Sill) writes: >We have a 1.5MB NCD16 that we'd like to upgrade. Does it make sense >to go all the way to 4.5MB or is 3MB sufficient. that depends totally on your application needs - how many windows, use of backing store, etc. can't help you there. >Is it true that "A SIMM is a SIMM is SIMM"? Could I buy someone >else's 1MB SIMM? Has anyone done this? indeed, a SIMM is a SIMM... I believe someone here did exactly what you're proposing: went to local store & bought ones of similar cycle speed and they worked fine. the spec's are: 256K or 1M by 8 bit, 100ns; max. height 1.1", between 0.047 and 0.053 inches thick. perhaps you'd best ask the store if you can return them if they don't work; then what do you have to lose? Don Giberson / Pyramid Technology Corp / djg@pyramid.com / 415-965-7200 x2031 <or> ...!{allegra,decwrl,hplabs,munnari,sun,uunet,utai}!pyramid!djg Standard disclaimer, etc. etc.
fmr@cwi.nl (Frank Rahmani) (07/14/89)
> else's 1MB SIMM? Has anyone done this?
Dave,
we tried them with Apple Macintosh SIMMS,as we didn't have any others.
It worked o.k. So should others (and cheapers).
fmr@cwi.nl
--
It is better never to have been born. But who among us has such luck?
Maintainer's Motto:
If we can't fix it, it ain't broke.
These opinions are solely mine and in no way reflect those of my employer. klong@pauling.bcm.tmc.edu (Kevin Long) (08/02/89)
In article <9@ark1.nswc.navy.mil> dsill@ark1.nswc.navy.mil (Dave Sill) writes: >We have a 1.5MB NCD16 that we'd like to upgrade. >To upgrade to 4.5MB >requires replacing all four 256k SIMMs with 1MB SIMMs (at $450 each). I guess this goes along with the Navy's $500 hammers :-)? I don't know where you buy your memory, but we haven't paid a penny over $200 for 1MB SIMMs in about a year, and that's without an educational discount (just a verbal estimate that we'll buy 80MB a year). Try contacting Clearpoint Research Corporation in Hopkinton, Mass. 3.0MB has worked quite satisfactorily on all eleven of our NCD16s. We run FrameMaker, several xterms, a paint program, xwatch, xclock, xtools, twm, and a number of home-grown applications with memory to spare. For us, it's certainly the case that our screens get filled with too many windows before we run out of 3.0MB memory. Kevin Long IAIMS Research