AMD holds off on DDR-2 support
 

AMD HAS BEEN RUMOURED to be coming out with DDR2 in Q2, and documents floating around the i915/925 launch said as much. AMD basically said 'we could do it now, but why', and followed it up with numbers proving that it made little sense until DDR2-667 hit.

http://www.theinquirer.net/?article=20749