i am using 2 stick of 256mb twinmos pc-2700 CL2.5 ddram and mobo KT4V.the problem is when i set the memory timing to 2-2-5-2,the pc won't boot.i dunno what is the problem.maybe this is not a good ddram.one more thing i see ppl say got the CLK setting like +33 or +66 but i cannot find it.