The maximum bandwidth of onboard ports is 133MB/sec.
Don't be alarmed though, although SATA drives theoretically transfer 150MB/sec they only really transfer at around 60-75MB/sec.
The reason I bring this up is because the motherboard will only have 2 SATA ports, meaning that you will have to get 2 SATA hard drives on one cable (120-150MB/sec for RAID -0) and put the storage hard drive on the other port.
I recommend using 1 port per SATA hard drive and creating a RAID array, then buying a PATA (Parallel (normal
)) and using a nice ATA133 hard drive in an IDE port.
There is no major performance difference between SATA and PATA. Plus, PATA hard drives are cheaper and you can get yourself a nice large drive.