I have just checked. My mobo Gigagbyte 945 pl-s3 does not have RAID integrated. Just SATA II which show up as IDE in the BIOS.
There are 3 PCI E 1x slots. If I understand correctly the max throughput is 250 MB/s, so that would be O.K., as I would only be running 2 samsung SSDs, which people seem to feel would max out <200MB/s?
If this is the case, can anyone suggest a PCI E 1x RAID card (I have seen one with a JM chipset- should I avoid)?