Just like NVIDIA's EPP the Intel Extreme Memory Profiles (XMP) is a set of SPD settings to automatically run memory at its advertised speeds - kinda like "plug and play" overclocking.
Designed to significantly increase performance levels of the entire platform, these modules feature Intel Extreme Memory Profiles (XMP), an exclusive set of SPD (Serial Presence Detect) settings that act as an integrated “plug and play” overclocking tool. With a long history of providing the most innovative products to the enthusiast community, OCZ is excited to take advantage of Intel’s interest and development of overclocking platforms.
“It is truly a milestone in personal computing to see Intel support overclocking,” commented Dr. Michael Schuette, VP of Technology Development at OCZ Technology. “The new Extreme Memory Profile options on the new OCZ DDR3 modules allow the end user to select extreme or ultimate performance through a framework of predefined and validated optimizations of individual settings without the hassle of manually adjusting each single parameter. Moreover, the predefined settings also adjust parameters that are not accessible to the user in most CMOS setup utilities. What this means for consumers is easy overclocking on Intel platforms right out of the box.”