I have a gigabyte 7n400 pro2 mobo and an amd athlon xp 2800+ barton processor. The problem is that when i activate dual channel ddr in 333 mhz mode ( the memory sticks are kingmax ddr400 rated), windows xp starts loading it suddenly restarts. When i go back to dual channel ddr 266 mhz the problem dissapers. I consider this a big disadvantage because i know that nforce2 boards work best at cpu fsb: memopry clock = 1:1. How can i fix this problem? Thank you.