http://www.railheaddesign.com/ has just finished a series of speed tests from its readers. At least for today the homepage shows these tests. Looks like the DDR does have a speed advantage in some tests. Shows you that barefeets tests aren't conclusive after all. Intriguingly the Flat Panel iMac 800 Mhz is actually faster in these tests than the Powerbook G4 800 even though the G4 800 has an L3 cache the iMac does not. Just goes to show there are as many different ways to test speed as there are people out there testing, and no one way will yield a conclusive result.