X86-Secret are reporting that DDR II is a dud as the old DDR is out performing DDR II as the same speeds! Here's a Google translation as the sites in French.

Our Russian friends having received for now several weeks of the platforms Alderwood (i925), we have been able to examine the performances offered. At present, force is to note that platforms GDR-II 533 are approximately 5% to 10% less powerful than the old good i875P coupled to Dual GDR-I 400.