I thought the dual Channel ram was supposed to make the computer a bit faster. I had 768 megs of RAM in my iMac G5 and today i got my 512 stick from Crucial. Popped it in so I now have a gig of RAM in there. Seems the machine slowed down. The RAM is being recognized and all, but I thought having two 512 sticks in there would activate the dual channel and make this thing fly...NOT. Maybe I need to upgrade it to 2 gigs? I just cant figure out why it actually feels a bit slower to me. Maybe Im overexpecting or something...who knows?