RAM_XP.exe is a RAM idle program from tweaknow. All RAM idle type applications are a scam and a waste of money. They will not improve your performance in any way. More information about this program can be found here.

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RAM Idle Professional is a smart memory management program that will keep your computer running more efficiently, faster, and longer. RAM Idle works by freeing up physical RAM wasted by Windows and other applications. RAM Idle also includes cache and startup managers that make it easy to optimize Windows.