Common Computer Memory Types

There were memory types that are specific to a range of years that computers were purchased,that determine
 what type of computer memory your computer has.

From 1997 to 2000 was primarily sdram 168 pin memory sticks
From  2000 to 2003 was primarily DDR 184 pin memory sticks
From   2004 to 2006 was primarily DDR2 240 pin memory sticks   This memory below is Sdram 168 pin

DDR 3 was out in 2007 but not used as much as DDR2   This memory stick below is DDR 184 pin

This Memory Stick to the left is DDR 2 High performance 240 pin the metal is heat sinks to
keep the memory running cooler.

This memory stick above is made by samsung and is DDR 4 and will be used in the next year or so.