So I posted a thread about this a week or so ago. So me and my buddy Matt were discussing and he finally ordered the 2gb stick off Amazon. Let the pictures speak for themselves. Theres an odd thing where it displays 1gb at the bottom but 2gb at the top in system profiler. But activity monitor confirmed the 2gb does in fact work. EDIT: Added the activity monitor. Wala. 2gb in a PB12"