RAM for my Powermac G5

Hi everybody, first post here

I have a Powermac G5 out of the country and won't have access to it till mid june. I need to buy some more RAM cards for it before I had there and since I can't check the specs I thought I would ask some opinions other than buying the wrong one.

I'm sure it's a Powermac G5 dual 2.0 and it has 8 slots for RAM.
I checked some specs on the net and it says 400 MHz PC3200 DDR SDRAM

Now, is the PC3200 DDR the only compatible RAM for me? I also hear the 533 MHZ PC4200 DDR2 SDRAM also fits a Dual G5 2.0, not sure it works on mine.

What's he difference bet DDR and DDR2?

Any tips on brands?

Many thanks

G;day and welcome to the Forums.

Being in Australia have the same problem but have one suggestion. Go to OWC at www.macsales.com and look for RAM for your model G5 and yes DDR and DDR2 are quite different.

Start right here:-

http://eshop.macsales.com/MyOWC/Upgrades.cfm?model=218&type=Memory&TI=1810&shoupgrds=Show+Upgrades

Odds are it is just downclocking the PC4200 to 3200 speeds. I would recommend sticking with 3200 just to avoid any potential headaches.


DDR and DDR2 are two totally different beasts. DDR2 will not run in a DDR machine and vice versa.

Question answered
I will stick to the DDR 3200!

Any brands of RAM I should be avoiding?

Thanks for the help,
All the best!

I have my own preference, but I don't like to be too vocal because I don't want to seem like I am spamming. That said, all of the major brands (Mushkin, Crucial, Corsair, Patriot, etc...) make a good product. It really boils down to price, and customer service.

As suggested, go to a supplier such as OWC at www.macsales.com and price your memory modules, with postage. Then do a hunt around memory suppliers looking for the best buy.