YEAR INTRODUCED
TECHNOLOGY
SPEED LIMIT
1987
FPM
50ns
1995
EDO
50ns
1997
PC66 SDRAM
66MHz
1998
PC100 SDRAM
100MHz
1999
RDRAM
800MHz
1999/2000
PC133 SDRAM
133MHz
2000
2006
DDR
SDRAM
DDR2
SDRAM
266MHz
Up
to 667MHz ()