This Double Data Rate (DDR) memory option allows you to execute up to twice the number of operations per cycle than traditional SDRAM memory. This can effectively double the data exchange rate between memory and processors, allowing customers to retrieve and process information faster and more efficiently. Faster speed memory does not necessarily mean faster system performance, especially when combined with the latest Intel Xeon processor technology. For example, the new Intel Xeon processors require 400MHz memory data transfer rates, but the 400MHz transfer rate is actually performed using dual 100MHz double data rate clocks. The technique of combining dual 100MHz clocks and double data rate transfers delivers 400MHz data transfer rates. DDR memory is typically used for servers that require high-density packaging to optimize rack space.