Memory bandwidth is a phrase which is thrown around an awful lot these days. We hear about the memory bandwidth of a DDR module, the comparative bandwidth of Athlon 64 and Pentium 4, and the extra bandwidth you can add by running an enthusiast brand memory stick. Today, we're doing two things. The first is explaining just what exactly memory bandwidth is, and how it relates to latency. The second is taking a look at 4 different modules of DDR memory and finding out which of these provides the best memory bandwidth performance for your enthusiast system.