Hi, as the title suggests I have a G4 867. I have now done every concievable upgrade to it (1gb ram, 9800pro graphics card and a dvr 107 superdrive) Although I am finding it a bit short in the processor stakes. What I would like to know is, is it possible to buy another 867 chip to make it like a dual model? (if so where from?) and if so is it easy to fit and am I going to notice much difference? Or should I perhaps consider a higher spec g4 (cheaper than a g5) or just save a bit harder and plump for the g5? Just after most bang for me bucks. Any help greatly appreciated. Cheers.