best timing?

if the lower the better how come there is really expensive ram from corsair that has timings of 5-5-5-12?

can anybody show me a link to ram that has timings of 3-3-3-12 or lower?

thx 8)
 
The sticky post at the top of the forum is your friend (you know, the one it says to read before posting?). From that, here is a link that will explain all:
http://www.corsairmicro.com/memory_basics/153707/index.html

The short answer is that the lower the latency the better, but the numbers you are referring to are only *relative* values, not *absolute* values. Relative values can only be directly compared at the same memory bus speed. That's why CL4 at DDR2-800 is equal to CL2 at DDR2-400.