As far as I know, some OCZ modules won't work, such as the special ops, some G.Skill and all CAS7 rated modules.
There may be others, but that's all I know of.
Ones that do work are the Corsair 9-9-9-24 4gb kit, the OCZ 2000MHz kit was ok, but OCZ do not support them when used on this board, in other words, if you can't hit 2000MHz, it's not their fault
