In layman's terms please explain Column Address Strobe Latency in RAM

[legacy7955]

I'm looking to buy new DDR3 memory but I am totally puzzled by the CAS Latency and the numbers....

It seems like the difference between a stick of DDR3 with 11 11 11 and 7 7 7
is only measured in nanoseconds, so how would the end user, we humans actually notice the difference between these specifications, or in fact can we at all.

I'm not a complete geek so please try and explain this in plain English if you can. Thanks!

 

[thefabe]

Hope this will help some.CAS latency - Wikipedia, the free encyclopedia.
As it states the lower the latency the better.
As for being able to tell in real world synarios...well that's very subjective gaming being probably the best place to see a performance gain.
Fabe