Argh... I've searched but not come up with a conclusive answer to my questions... so I apologize in advance. Just got the new Mac Pro Quad 2.8 + 8800GT... with 2GB Ram. Ordered 2 1 Gig Sticks from TransIntl... they look EXACTLY like the Apple Ram (I'm guessing this is a good thing). Question about install, though... I've installed them and they are working, but I'm wondering if I did it correctly: When I had 2 1 Gig Sticks ala Stock... there was a single 1GB in the top riser, and a single 1GB in the bottom riser. I added the TRANSINTL memory by adding one of the new sticks in the top riser, and one in the bottom riser... so that the both risers had 1 Apple Stick and 1 Aftermarket Stick... Is this how I should have done it, or should I have put both Apple pieces in the top riser and both aftermarket pieces in the bottom riser? And if so, why? Does it matter? It's working... just curious! THANKS GUYS!