3ware 9650se with Tyan i5400xt (S5396)

Just for the record: the 3ware 9650SE-8LPML PCI-Express RAID card will work with the Tyan Tempest i5400xt motherboard. And, Windows Vista Ultimate x64 will automatically download and install drivers for the card. (I don't boot from the RAID, so installation is somewhat easier). Everything works flawlessly, and I'm getting close to 600mb/sec writes to a RAID 6 array (using 8x300GB Maxtor 7200rpm SATA drives).

You will, however, need a recently updated firmware. 3ware has a knowledgebase article about this. The card I bought off ebay was manufactured in December 2006, and the system would not POST with the card installed. 3ware processed an RMA for me and sent me a replacement manufactured in January 2008, which worked flawlessly with the motherboard.