Hi, Everyone said that MacPro 5,1 isn't dual channel or tripple, that you can put different ram size in it... It is true? It seem that many people do that... Crucial: They sell only Dual kit ? (http://goo.gl/vNYwG) Kingston (http://goo.gl/eTSvy): I have the 2.8Ghz quad core with 3x2GB ram pc-8500 in it. So how can i upgrade this, and have maximum performance ? My first idea was to add a 4GB in it like the KTA-MP1333/4G from Kingston 1333mhz ECC module. What is the downside and the upside of it ?