Please help - G3 400Mhz Lombard recognizes 256MB SODIMM as 128MB?

[ran]

Hi all!

I've been trying to upgrade the memory of my PowerBook G3 400mhz (no firewire, just USB) Lombard so as to run OS X.

I originally have 2 x 64MB modules...and I wanted to upgrade to 2 x 256 MB. I though the Lombard could take upto 512Mb of RAM.

I bought one 256MB module (used from a Compaq laptop) but the G3 Powerbook will only recognize this as a 128MB module!

Why? Is there something wrong with the module or the laptop?

any help would be appreciated...

Ran

 

[trpnmonkey41]

It is most likely something wrong with the module. What type of of DIMM is it (PC66, PC100, PC133 etc)

because the lombard can only handle PC66

 

[ran]

It is most likely something wrong with the module. What type of of DIMM is it (PC66, PC100, PC133 etc)

because the lombard can only handle PC66

Wow! Thanks for the quick reply!

I wasn't aware that it could only handle PC66 memory. I thought that PC100 and PC133 would work fine..just at a slower speed. In fact, I can get PC133 memory more cheaply than PC66 or PC100!

(BTW, to answer your question, it is PC133...which, as I said..I didn't think would be a problem.).

In fact, if you go to Crucial.com, they suggest a PC100 256MB module! So, *can* you add PC100 memory to this older laptop, or *must* you stick with PC100?

Again, thanks for a speedy reply
Ran

 

[trpnmonkey41]

http://store.yahoo.com/memx/powg340bronk.html

take a look at that page see if it helps clear things up

 

[ran]

http://store.yahoo.com/memx/powg340bronk.html

take a look at that page see if it helps clear things up

Cool, thanks. It confirms what I had thought..but I guess I was a bit off on the supported speeds...

Thanks again!