They do but sometimes it's due to cheating (i.e., 2T, increased voltages increasted latencies etc). Case in point DDR700 Although "533" seems very DDR2 ishthats gotta be DDR2. i dont think anyone manufactures a DDR ram that can go that fast but i'm sure someone will correct me if they do
Ok thats a lie, i gave up trying to update my specs every other day - they change at least once a weekthat is praetor's sig he has same mobo im getting but is using pc3700 ram