There is no way one can draw any conclusions just yet based on an engineering sample and undisclosed pre-production motherboard. When the retail versions are released then we can start judging IMO. But, it does look encouraging considering its their first attempt into DDR2 intergration.
DDR isnt that much of a inprovement. Actually it looks slower now, but that could be that they are using a sample motherboard. It's bios probably can't set the timings properly as they are running that corsair ram very loosely, instead of what it's rated at..