Plan to add more RAM to your PC? What memory module do you need? Here’s a nice FREE (for personal use) tool called RAMMon.
RAMMon is an easy to use Windows based application that allows users to quickly retrieve the Serial Presence Detect (SPD) data from their RAM modules. It will allow users to identify a multitude of attributes, of which, includes the manufacturer, the clockspeed and other data of their DDR2, DDR3, XMP and EPP memory devices and even some older memory types.
Download from here