[rescue] Need somethings for an old Dell Laptop

[Lionel Peterson]

I was very happy to expand my 2.16 Ghz MacBook Pro to 4 gigs from the Apple
stated 2 Gig max.

Turns out my very specific model chipset supports a full 4 gigs, same era
models of same laptop with different chipset only support 3 gig.

Breathed at least another year of life into that laptop... Which is good,
because I sprung for a new battery last year.

Lionel

On Jul 1, 2012, at 8:35 PM, adh at an.bradford.ma.us (Sandwich Maker) wrote:

> " From: Robert Novak <rnovak at indyramp.com>
> "
> " []
> "
> " By the way, I have not tried this with a C640, but the C840 (same
> " 845MP chipset and similar processors) works with 2GB of RAM. It's not
> " supported or documented by Dell, but I have at least one C840 running
> " with two DDR2700 1GB sodimms here. It takes longer to boot of course,
> " but it can give a bit more life and headroom to your machine if it
> " works.
> "
> " (I wrote about my memory adventures at
> "
http://rsts11.wordpress.com/2012/04/21/rsts11-laptop-memory-above-and-beyond/
> " if you'd like to take a look.)
>
> you don't mention it, but this phenom is well known among apple
> machines, and the trick is the correct geometry/density.  generally at
> any size there are two chip densities.  so if the mem controller can
> handle both 16 x 16M and 8 x 32M sticks, then it can also handle 16 x
> 32M...  but they'll never advertise it for fear that some moron luser
> will try some other 512M geometry and sue when they don't work.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> adh at an.bradford.ma.us                       and think what none thought
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