Simple enough question. I am looking for a PCIe 4x card with SATAIII internal ports that can support booting off my Intel 520 series SSD. I've read a lot of threads here but most are not clear which card will do just this. Most threads seem to be concerned with running multiple drives and or RAID. I want a card that simply gives 2 internal SATA 6Gbs ports and is supported by the 5.1 Mac Pro for booting OSX 10.8.4. Can someone clear this up for me as I don't want to get a Rocket RAID 640L when I don't need much of its capability. Price is my driving factor. Cabling it in is no issue for me.