and you can run your IDE drives through the SATA channels with adapters (for a moderate performance increase)
I'd be interested to see some benches or some iformation on this alleged "performance increase". Current SATA drives (other than the Raptor by Western Digital) are not faster than comparable PATA drives, say a 7200rpm PATA vs 7200 SATA. The SATA bus offers theoretical bandwidth increase to 150MB/s (currently) but as PATA drives are not capable of saturating the PATA bus (current max of 133MB/s) just having a faster bus does nothing to improve speed. The real issue limiting current drives in in the rotational speeds. That is why the Raptor is faster than other IDE drives, it has a 10,000 rpm speed vs the more common 7200 rpm. Also, generally speaking, running things through an adapter usually imposes a performance hit, not a benefit.
\Dan