CAS Latency?

[Fallen_Angel]

What does CL mean when they talk about in the DDR3 and is it only in DDR3... e.g.

OCZ PC3-12800 DDR3 6GB Intel®i7 Edition Low-Voltage Triple Channel 3x2GB Kit - Profile 1: 1600MHz CL 8-8-8-24 1.65 Volts, Profile 2: 1800MHz 9-9-9-28 1.65 Volts

I Googled it but I'm still confused... This is the exact RAM I'm going for is 1600 reasonable?
http://www.dslreports.com/faq/1563

 

[The_Techie]

RAM Timings Explained

And DDR3-1600 is perfect for an Intel Core i7 920 overclocked to 4GHz.

CL does refer to latencies, CL8 for example (usually) refers to 8-8-8-24 and CL9 (usually) refers to 9-9-9-27. There are slight variances.

 

[Fallen_Angel]

Awesome thanks