I just bought 4 450GB raptors to replace an SSD, I need space more than low access times. Right now it is set up on Windows SW RAID 0 because after testing, it was the fastest throughput vs Intel RAID. Will I see any benefit from going to a HW RAID card like a M5015(9260)? Also are there any HW RAID cards that will read from each part of a mirror in parallel? TIA