Upgrading my ram (will these work?)

Which Aluminum PBG4 15in. do you have? They can be classified by the CPU speed. You can open up SystemProfiler to find out if the RAM you already have in there is DDR or DDR2. The best bet is to go to Crucial Technology's site, use their Memory Advisor, and then shop around for chips with equivalent specs.

I would not recommend Kingston's Value ram series for any apple machine, they work fine in PC.. you should look into cruicial ram. That's what I have been using for years, never had a bad stick

As Cella pointed out, it's important to know which machine you have. If your machine is a dual-layer DVD drive with high resolution screen, you'll use DDR2 memory, otherwise DDR. Check your machine specs at http://support.apple.com/specs/powerbook/

Recommend Crucial, Kingston (not their valueram line), or Samsung for memory, as they run consistently well in our PB's. Use the memory selectors on Crucials or Kingstons site, or for Samsung, see various distributors, like OWC at http://www.macsales.com .

I'd also point out that your link points to a pair of regular 184-pin, DDR DIMMs. Your powerbook requires 200-pin SoDIMMs (Small Outline DIMM).

I would use the features at someplace like

eshop.macsales.com (Other World Computing)
or
www.crucial.com

to look up memory specific for your particular model of powerbook.

Please keep in mind that the last revision of the 15" Al PB (Hi-Res/Dual Layer model) is very finicky when it comes to the RAM that you use. Many people have had problems even using "compatible" RAM (yes, I am talking about CRUCIAL, OWC, RAMJET, etc...).
The solution I found was to finally buy the original SAMSUNG RAM that Apple uses for the notebook. It cost more yes, but I have an absolutely stable and fully functional computer.

Good luck.

I have some RAM from Dane-Elec, marked SOD333-0646451, then PC2700U-2533 512MB
I was sold it on eBay for an iMac G4, but will it fit my G4 Powerbook 15"?
I have tried looking up on Crucial, but their memory looks different and the measurements don't seem to be the same. Mine is 2 5/8inches x 1 inch.

PowerBook G4 Mac OS X (10.4.4)

When I looked up that product name and number, it looks like a regular 184 pin DIMM, not a SODIMM. It wouldn't even fit in an iMac I don't think (don't the G4 iMac's also use 200 pin SODIMMs?).

I can't find a pic of the thing though, and the two numbers SOD333 and 0646451 do not seem to ever occur together for the same product?

Thanks so much - actually, on looking more closely, I see that it has 200 pins (numbered 1-199 on one side, and 2-200 on the other). What's confusing is the fact that what I've read says you need 1 1/4inch wide memory, and these are only I inch! I've looked at the DANE-ELEC website and it's hopeless! Can't find a thing on it! Any more ideas? Should I be able to tell by holding it against what's in the Powerbook at present?
Most of the memory on the Crucial website has four black rectangles per chip, this has only two...
Thanks for your help.

PowerBook G4 Mac OS X (10.4.4)

If you look up on Kingstons web site ( http://www.kingston.com ), you'll find that their memory for the iMac G4 1ghz-1.25ghz that takes PC2700 memory uses the same RAM strip as a PowerBook 1.5ghz. So, as you state, the memory came from an iMac G4 PC2700, it should fit a 15" PowerBook that uses PC2700 memory. Not knowing which PB you have, you may want to confirm for yourself, using the Kingston web site, that the KTA-PBG4333/512 RAM also fits your system.

Hopefully it will work for you. If you use it, and find yourself getting kernal panics, put it back for sale on ebay.

PowerBooks use memory bus slewing to control heat and power consumption, and while some memory meets the printed specs, not all brands can handle the PowerBook architecture. You can google on 'powerbook bus slewing' to read the Apple developer documentation that goes into it in more detail. Crucial, Kingston (not their valueram), and Samsung are three manufacturers that make memory which works with our PB's.

It worked! Fitted and seems fine. Thanks for all your help.


PowerBook G4 Mac OS X (10.4.4)

I want to upgrade my RAM. I am going to use Crucial.
My Powerbook came with 512MB DDR2 PC2-4200.
Can I replace this with 2GB of DDR2 PC2-5300 or should I stick with 2GB of DDR2 PC2-4200?

Powerbook G4 1.65Ghz, 512MB DDR2 SDRAM Mac OS X (10.4.8)

Powerbook G4 1.65Ghz, 512MB DDR2 SDRAM Mac OS X (10.4.8)