SimpleTech RB168S133/128A 128MB PC133 Non-ECC SDRAM 168pin DIMM One of the top three least expensive ways to make a marked improvement in your computer's speed and performance Guaranteed to be as good or better than the memory that came originally with your computer Specifically designed and engineered to follow industry's stringent memory specifications, then tested with multiple system types to guarantee compatibility Delivers an overall enhanced performance for your computer Highest quality assurance rating available - ISO9001 Certified