I believe someone here was able to hit over 600MB/s with the 5/i....
Well I can hit 600mb/s + with the Perc 5i, but its not consistent across the board. The usual (HD Tune) is 450MB/s with 8mb, Crystal Disk Mark is 400MB/s with testing at 1000MB, but 600MB/s at 50 and 100MB. Cache is usually the reason for the discrepancy.
ATTO averages around 450MB/s, but if I do 256KB transfers only t goes up to 610MB/s.
Perc5i is good, but the aging IOP333 can't handle more than two high end SSD's.