Hi. I have a mac pro with 2 3.0 ghz quad core cpus and I am upgrading from stock ram to 4 gbs. Specifically, I am looking for a 4 gb set (2 x 2 gbs). Here is the set I am looking at: http://www.ec.kingston.com/ecom/con...://www.kingston.com&ktcpartno=KTA-MP667AK2/4G Is that the best/fastest ram I can get for a mac pro? How would this ram compare to mac pro ram from corsair and crucial? P.S. I was going to get this.... http://www.ec.kingston.com/ecom/con...p://www.kingston.com&ktcpartno=KTA-MP667K2/4G ....but it is apparently only for 4-core systems. The price of it and the other kingston set I listed is the same, so it doesn't matter.