How to Know if it's DDR2 RAM

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DDR2 RAM (short for "double data rate 2 random access memory") is a type of computer memory chip that works in many of the computers available on the market. It is the successor to regular DDR RAM and is twice as fast as that style of chip. If you have a piece of RAM and would like to know whether or not it is specifically the DDR2 kind, you can look for one of a few different identifying marks that will tell you what you need to know.

  • Look on the packaging that your RAM chip came in. The type of RAM will always be printed in big block letters directly on the original packaging, as well as in the instruction and user manuals that came packaged with the chip itself.

  • Look on the label that is affixed to the RAM chip. Printed on this label will be important information regarding the chip, including the manufacturer, the model number and the type. This label will tell you whether or not your RAM chip is DDR2.

  • Measure your RAM chip. DDR2 RAM chips are all 133.35 millimeters in length. If you use a ruler and determine that your RAM chip is 133.5 millimeters in length, you're holding a stick of DDR2.

  • Look for two half-circular indentations on each side of the RAM chip. DDR2 RAM has these indentations on each side, for a total of four. If the chip that you're holding matches this descriptions, your RAM stick is DDR2 RAM.

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