Ok I already went through the FAQ's like a good poster but I have a bit of a question I didnt see answered. I know that a lower CAS will mean faster ram in general. I am currently looking at 3 DDR2 sets all of them CAS 4. One has a CAs timing of 4-4-4-12 and the other has a CAS timing of 4-5-4-15. Would I be getting better performance with the 4-4-4-12 or the 4-5-4-15? There is only like a $20 price difference between the 2 so price is really a moot point and I know that I could get faster performance with say a CAS 3 or CAS 2 but is there any real difference between the 2 timings?