"Intel added what it termed XMP or Extreme Memory Profiling to its X38 and X48 chipsets; this in terms of technology is the same as NVIDIA’s EPP which adds extra instructions into the memory SPD, allowing the memory to tell the system how fast it can run, what extra voltages it needs and what timings can be used for certain extreme profiles.

Today we have A-DATA’s Vitesta Extreme Edition DDR3 modules designed for XMP with a rating of 1600MHz; the fastest that Intel currently supports on its X series chipsets. Let’s see how well it performs."