Can I mix 60ns with 70ns?
Dong Chen
Hi, everyone,
I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
non parity. As I read from this newsgroup, seems I can use EDO SIMMS
but I have to stay with non parity. Now, can I add 60 ns ones to my
machine? Thanks a lot. -- Dong
Sawaddi
I have the same system. It has the Intel Neptune chipset which does not
support EDO memory. The Triton chipset does. The Triton chipset was
introduced in 1995. I don't think your system has the Triton chipset.
Dong Chen <d_c...@ix.netcom.com> wrote in article
<327ced90...@NNTP.IX.NETCOM.COM>...
Scott L. Foglesong
d_c...@ix.netcom.com (Dong Chen) wrote:
>Hi, everyone,
>I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
>non parity. As I read from this newsgroup, seems I can use EDO SIMMS
>but I have to stay with non parity. Now, can I add 60 ns ones to my
>machine? Thanks a lot. -- Dong
Yes; as long as the chips are fast enough, it doesn't matter if
they're too fast.
Cheers--
----------------------------------------------
Scott L. Foglesong
San Francisco Conservatory of Music
sco...@mindspring.com
"Too many notes, dear fellow, too many notes."
-----------------------------------------------
BWayland
"Sawaddi" <saw...@worldnet.att.net> wrote:
>
> I have the same system. It has the Intel Neptune chipset which does not
> support EDO memory. The Triton chipset does. The Triton chipset was
> introduced in 1995. I don't think your system has the Triton chipset.
>
> Dong Chen <d_c...@ix.netcom.com> wrote in article
> <327ced90...@NNTP.IX.NETCOM.COM>...
> > I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> > non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> > but I have to stay with non parity. Now, can I add 60 ns ones to my
> > machine? Thanks a lot. -- Dong
> >
>
just added 8 mbs of 72 pin, 60ns non parity, runs great!
Samuel Liddicott
Scott L. Foglesong <sco...@mindspring.com> wrote in article
<327d686d...@news.mindspring.com>...
> d_c...@ix.netcom.com (Dong Chen) wrote:
>
> >Hi, everyone,
> >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> >but I have to stay with non parity. Now, can I add 60 ns ones to my
> >machine? Thanks a lot. -- Dong
>
> Yes; as long as the chips are fast enough, it doesn't matter if
> they're too fast.
Yeah, but that doesn;t *mean* they can use EDO.
--
Sam Liddicott | Nothing I say is to be attributed as |
Campbell Scientific Ltd. | a company statement or representation. |
Campbell Park, 80 Hathern Road, *----------------------------------------+
Shepshed, Leic. United Kingdom. LE12 9AL Phone: +44 (0) 1509 601141
Email: s...@campbellsci.co.uk Fax: +44 (0) 1509 601091
Andrew Ansell
Samuel Liddicott wrote:
>
> Scott L. Foglesong <sco...@mindspring.com> wrote in article
> <327d686d...@news.mindspring.com>...
> > d_c...@ix.netcom.com (Dong Chen) wrote:
> >
> > >Hi, everyone,
> > >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> > >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> > >but I have to stay with non parity. Now, can I add 60 ns ones to my
> > >machine? Thanks a lot. -- Dong
> >
> > Yes; as long as the chips are fast enough, it doesn't matter if
> > they're too fast.
>
> Yeah, but that doesn;t *mean* they can use EDO.
From what i can remember of the timing diagrams you should be able to
treat EDO ram as if it's FPM (Fast page mode). You should be able to mix
any non-parity (virtualy all EDO is nonparity) memory as long as you
have matched pairs of simms. The access time of the RAM probably won't
make any difference depending on your bus speed, the advantage in 60ns
is that if you ugrade to a motherboard that requires 60ns max you can
keep your memory.
Andrew
Samuel Liddicott
Scott L. Foglesong <sco...@mindspring.com> wrote in article
<327d686d...@news.mindspring.com>...
> d_c...@ix.netcom.com (Dong Chen) wrote:
>
> >Hi, everyone,
> >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> >but I have to stay with non parity. Now, can I add 60 ns ones to my
> >machine? Thanks a lot. -- Dong
>
> Yes; as long as the chips are fast enough, it doesn't matter if
> they're too fast.
Yeah, but that doesn;t *mean* they can use EDO.
--
durgin
Responding to Scott's original post. It is possible to put 60 ns EDO
into an XPS 90. I know because I dropped 32 MB of new Dell EDO into a
friend's server a couple of weeks ago, which had the older 70 ns FPM
RAM. The EDO only works at the FPM's slower speed, but it does provide
some greater flexibility in that newer systems generally support EDO.
--
___________________________________________________________________
| |
| dur...@world.std.com dur...@durgin.net |
| http://www.durgin.net |
| Durgin & Associates System Development |
| |
|_________________________________________________________________|
Samuel Liddicott
Date :02:25:48 PM Wed 13 Nov 1996 GMT
Samuel Liddicott
Date :02:27:56 PM Wed 13 Nov 1996 GMT
Andrew Ansell
Samuel Liddicott wrote:
>
> Date :02:27:56 PM Wed 13 Nov 1996 GMT
>
> Scott L. Foglesong <sco...@mindspring.com> wrote in article
> <327d686d...@news.mindspring.com>...
> > d_c...@ix.netcom.com (Dong Chen) wrote:
> >
> > >Hi, everyone,
> > >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> > >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> > >but I have to stay with non parity. Now, can I add 60 ns ones to my
> > >machine? Thanks a lot. -- Dong
> >
> > Yes; as long as the chips are fast enough, it doesn't matter if
> > they're too fast.
>
> Yeah, but that doesn;t *mean* they can use EDO.
You already posted that responce about a week ago, there no need to send
it twice more.
sorry i'm in a sarcastic mood today.
and for the second time yes it does mean you can use EDO, EDO is better
than FPM 'cause you can get burst cycles out faster once the sequence is
started. you can treat EDO as FPM and 60ns as 70ns perfectly OK. If
there is any speed improvment or not will depend on the mother board
chipset and clock speed.
Andrew
Andrew Ansell
Andrew Ansell wrote:
>
> Samuel Liddicott wrote:
> >
> > Date :02:27:56 PM Wed 13 Nov 1996 GMT
> >
> > Scott L. Foglesong <sco...@mindspring.com> wrote in article
> > <327d686d...@news.mindspring.com>...
> > > d_c...@ix.netcom.com (Dong Chen) wrote:
> > >
> > > >Hi, everyone,
> > > >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> > > >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> > > >but I have to stay with non parity. Now, can I add 60 ns ones to my
> > > >machine? Thanks a lot. -- Dong
> > >
> > > Yes; as long as the chips are fast enough, it doesn't matter if
> > > they're too fast.
> >
> > Yeah, but that doesn;t *mean* they can use EDO.
>
> You already posted that responce about a week ago, there no need to send
> it twice more.
> sorry i'm in a sarcastic mood today.
My appoligys, going by the fact that half the arcticals look familiar i
think my news reader has screwed up and forgotten what i've already
read.
now all i need to do is learn how to spell.
Andrew (again)
Phineas Gage
In article <328E5E...@cam.ac.uk>, asa...@cam.ac.uk says...
>
>Samuel Liddicott wrote:
>>
>> Date :02:27:56 PM Wed 13 Nov 1996 GMT
>>
>> Scott L. Foglesong <sco...@mindspring.com> wrote in article
>> <327d686d...@news.mindspring.com>...
>> > d_c...@ix.netcom.com (Dong Chen) wrote:
>> >
>> > >Hi, everyone,
>> > >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
>> > >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
>> > >but I have to stay with non parity. Now, can I add 60 ns ones to my
>> > >machine? Thanks a lot. -- Dong
>> >
>> > Yes; as long as the chips are fast enough, it doesn't matter if
>> > they're too fast.
>>
>> Yeah, but that doesn;t *mean* they can use EDO.
>
>You already posted that responce about a week ago, there no need to send
>it twice more.
>sorry i'm in a sarcastic mood today.
>
>than FPM 'cause you can get burst cycles out faster once the sequence is
>started. you can treat EDO as FPM and 60ns as 70ns perfectly OK. If
>there is any speed improvment or not will depend on the mother board
>chipset and clock speed.
You're wrong. While it is OK to mix edo and non-edo (in separate banks), the edo memory
will "slow down" to non-edo. But it will work (on most Mb's).
>
>Andrew
--
Dubito cognito ergo sum. I doubt that I think, therefore I am: What Descartes
might have said at one point.
Samuel Liddicott
Andrew Ansell <asa...@cam.ac.uk> wrote in article
<328E5E...@cam.ac.uk>...
> Samuel Liddicott wrote:
> > Yeah, but that doesn;t *mean* they can use EDO.
>
> You already posted that responce about a week ago, there no need to send
> it twice more.
> sorry i'm in a sarcastic mood today.
>
> and for the second time yes it does mean you can use EDO, EDO is better
> than FPM 'cause you can get burst cycles out faster once the sequence is
> started. you can treat EDO as FPM and 60ns as 70ns perfectly OK. If
> there is any speed improvment or not will depend on the mother board
> chipset and clock speed.
I'm in sarcastic mood as well today. I don't believe I did post it a week
before, I believe it was more like a couple of days before. Maybe one day.
My news server is screwy and has been holding on to articles for the past
few months. When I hit it, I must have knocked it into another phase
space, cloning the articles. I'm surprised you could see the others, as
they are out of phase with most peoples computers. And while this is not a
need to send it more than once, it is the cause and reason.
Andrew Ansell
Phineas Gage wrote:
> In article <328E5E...@cam.ac.uk>, asa...@cam.ac.uk says...
> >Samuel Liddicott wrote:
> >> Scott L. Foglesong <sco...@mindspring.com> wrote in article
> >> >
> >> > >Hi, everyone,
> >> > >I have Dimention XPS 90 (10/94). Dell told the SIMMs are 72 pin, 70ns
> >> > >non parity. As I read from this newsgroup, seems I can use EDO SIMMS
> >> > >but I have to stay with non parity. Now, can I add 60 ns ones to my
> >> > >machine? Thanks a lot. -- Dong
> >
> >than FPM 'cause you can get burst cycles out faster once the sequence is
> >started. you can treat EDO as FPM and 60ns as 70ns perfectly OK. If
> >there is any speed improvment or not will depend on the mother board
> >chipset and clock speed.
>
> will "slow down" to non-edo. But it will work (on most Mb's).
Ok, forgot to mention that you have to have matched pairs of simms. but
are you sure both banks have to go at the same rate? I thought they were
treated independantly. I'm assuming a Triton chipset or equivlent (from
the DRAM point of view)
Andrew
Peter
On Mon, 18 Nov 1996 21:51:20 +0000, Andrew Ansell <asa...@cam.ac.uk>
wrote:
I could be wrong about this, but just an idea here. I think that the
only Dell Pentium machines that were shipped with the Triton chipset
were the model numbers which included 'c' in them. For example Dell
Dimension XPS P133c. I was told this by a Dell Tech a few months
back.
Pete
Andrew Ansell
Andrew
Dong Chen
Thank you all for your comments and suggestions. I just bought a pair
of 32MB 60ns EDO SIMMs ($141.00 each) and put into the 3rd and 4th
slot. There are already a pair of 70ns 4MB non-parity ones in the 1st
and 2nd slot. My machine recognized them immediately, total 72MB and
it runs fabulously. I ran WinTune95 (Windows 95) and tested it with
72MB mixed SIMMs and 64MB EDO SIMMs. The memory score with 72MB is
slightly higher. I opened about 10 applications such as netscape, free
agent(32), visual C++ 4.0, MS Word, MS Access etc and switched back
and forth. Almost no hard drive swap in both cases. And the loading
speed is much much faster(496%?). Thanks again.