I am looking to use faster HDDs for my main system disk. Is RAID 5 a good choice (with 3x 15000 SAS HDDs)? I know that RAID 0 is faster, but I want redundancy without too great of compromise. Is there any speed advantages to RAID 1? Also, I am likely going to buy a 3ware 9690-4I SAS controller card (8x PCIe); will this work in a mobo with PCIe-x16 with a x4 electrical bus (I have 2x Graphics Cards in X-Fire in the other 2 PCIe-x16)? Thanks to any1 brave enough to brave this barrage of questions, U guyz r the best;) ~Mav.