My wife has an old Dell Laptop. The letters CPxJ come up on the Dell
site when I enter the service tag. We would like to upgrade the 256MB
memory, which seems insufficient, to 512MB. I know that it takes P100
memory modules, but they don't seem to be too available at cheap prices.
However, there do seem to be some P133 on EBay. My question is whether
this computer can use those chips.

I suspect, that with the availability of much newer machines at fairly
reasonable prices, it wouldn't make sense to spend too much for the
memory upgrade.

Any suggestions as to the best route to take.
--
Jerry Bank
Trenton, New Jersey
Music is the language of the gods.

Jerry Bank wrote:
you need 16-chip 256 modules.
virtually all 16-chip modules are p100
but not all p100 are 16-chip
has to do with address lines vs chip selects
it's the most expensive ram on the planet because everybody with an old
laptop wants 'em and they haven't made 'em in years.
But you already know that...
But there may also be a limit on the total ram...been too long since I
built a cpx.

Insufficient???
It obviously depends on the OS and what you're trying to do.
Most of us would notice some speed increase, but we wouldn't be
bragging to our friends about how we spent $100 on a computer that's
now worth $150 with the ram. If you REALLY need that much ram,
you've got other problems. Get a better SYSTEM.

My experience has been that it's always cheaper to buy a used laptop
that takes cheaper ram than to upgrade a P100 system...except when
people give me 16-chip ram...

--
Return address is VALID!

Jerry Bank wrote:
that's guaranteed to work, but wants $67 for it. You definitely need the
low density ones.

Jerry Bank wrote:
I've not tried that substitution with SO-DIMM
memory but have tried it in Desktops, with
difficulty.

While P100 used to substitute for slower
SDRAM with no difficulty, the 133s seemed to
be more critically tuned and had issues at
the lower speed -or- the older/slower bus
wasn't ready for the data and the memory chip
was turning it out too soon. All that was
years ago and newer 133 chips might be OK.

Checkout www.thechipmerchant.com . Go to
Memory>Latops>PC100. These folks have been
in the memory business for nearly 15 years
and have a great reputation.

--
pj

On Sep 29, 11:39 am, Jerry Bank <bankce...@verizon.net> wrote:
Jerry;
try oempcworld.com. They have the best prices I find their RAM seems
to work on anything I have
used it in.
Ken