Ram for my Dual G5 1.8........

It should work.... why not just take the memory out your PC and put it in your Mac and see if it works? 😉

Corsair Ram for my Dual G5 1.8

You can certainly try it, however Corsair do not guarantee their RAM for use in Macintoshes. Keep that in mind if you are ever talking to them about support or warranty...

Thanks
Trevor
CanadaRAM.com

Well, it's kinda impossible for us to tell if a specific stick will work in the Mac or not, especially seeing as we don't know what model of Corsair PC3200 it is.

As a PC3200 there is more than a 50% chance it will work, although some PC3200s do not work in Macs.

What you're really needing to know is should you splash out for another matching Corsair stick before you know one way or another whether it'll work in the Mac. My opinion is - no. Corsair is low-latency PC Gamer RAM with a premium price, and Corsair disclaim warranty for use in Macs. I would suggest getting a matched pair elsewhere.

If you are determined to try, borrow a known-good 512 PC3200 from a Mac-owning friend and temporaily pair it with the Corsair for testing.

Don't get the idea I'm down on Corsair - they are great products and we sell them to PC users all the time - but they are not the product for Mac owners.

Thanks
Trevor
CanadaRAM.com

Don't use shielded RAM. Other than that, any good DDR CL3 or CL2.5 non-ECC RAM will do. Don't be paranoid. I put in SIMPLE TECH from Sam's Club and it rocks!