I thought the 975X's OC'd the E6600's and up a little better. At least that's what I've been reading.

I guess I'll find out 'cause I just ordered a P5W DH that will hopefully ship tomorrow 2nd day air. I like the RAID/SATA support better on the ASUS boards than the DS3. The DH has Silicon, ICH7 and Matrix intel SATA/RAID support. We shall see - it'll be an expensive mistake if it doesn't work out.