Taken from the Asus web page on the A8N-SLI Premium.
Dual RAID
The nFORCE4 chipset incorporated four Serial ATA and two parallel connectors with high performance RAID functions in RAID 0, RAID 1, RAID 0+1 and JBOD. The Silicon Image controller provides another four Serial ATA connectors for RAID 0, RAID 1, RAID1+0, and RAID 5 functions. The A8N-SLI Premium is the ideal solution to enhance hard disk performance and data back up protection without the cost of add-on cards.
Does this mean that the NV SATA ports are connected directly to the Southbridge and have a larger potential top speed in a RAID set up than the Silicon Image ports?
Dual RAID
The nFORCE4 chipset incorporated four Serial ATA and two parallel connectors with high performance RAID functions in RAID 0, RAID 1, RAID 0+1 and JBOD. The Silicon Image controller provides another four Serial ATA connectors for RAID 0, RAID 1, RAID1+0, and RAID 5 functions. The A8N-SLI Premium is the ideal solution to enhance hard disk performance and data back up protection without the cost of add-on cards.
Does this mean that the NV SATA ports are connected directly to the Southbridge and have a larger potential top speed in a RAID set up than the Silicon Image ports?