OK, running win xp pro, using the A7N8X Deluxe with the built in Silicon Image SATA raid. Set up a 16K stripe etc etc. I have done many raid configs before, I am not new at this. My 2 Maxtors with a Promise raid card yeiled about 60K write and 65-70K Read. With the 2 Raptors I am hitting a wall at 19K write speeds, my read speeds are fine at over 100K. Any ideas? Im stumped!