The chart : http://www.hardwareoc.com/raid3.htm The article : http://www.hardwareoc.com/raid1.htm Gains all over, but he mentions price concerns at the end. However, ATA100 Raid capable mobo's are around $225 now. Makes me want to get that second drive after all... Cheers. Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://nospin.com/pc/pcbuild.html