My set up was nothing an OEM would want.. the point is BTX won't have to go through all the work and mods I did to get a quiet set up; it will be cheap and easy to duct a near silent system, on a higher output processor than I was using.
And as for prescott, its been confirmed that the 3.2 ghz will have 103 watt power consumption, which leads to the concerns that current i865/875 motherboards won't have the VRs needed for prescott compatbility.
http://www.theinquirer.net/?article=11588 shows its not a temporary trend; thus the reason they're making a new form factor to handle it.