I upgraded to the Asus P5K Premium - it has all the BIOS options I need including all the missing memory settngs that Asus never included in the P5W Bios .http://www.xtremesystems.org/forums/...&postcount=361
Performs very stable on o/c due to increased quality and number of capacitors over P5K deluxe- not a lot of vdroop either. I can easily run the 4x1GB RAM upto 1200 with good timungs . Seems to get the best out of the GO processors and is ready for the 45mm. I would run higher but am limited by my cooling.