As a general rule, it is best to match the type of memory that is currently in your system. However, it is possible to mix and match SDRAM speeds under certain conditions.

You CANNOT add slower modules to a system designed for faster modules. For example, you cannot add 66MHz modules to a system designed for PC133.

You should NOT use a PC133 or PC100 with a 66MHz front side bus system. You should only use 66MHz memory modules with a 66MHz front side bus system.

You CAN use PC133 modules with a 100MHz front side bus system and vice versa. However, keep in mind that your memory will only be as fast as the slowest "link" in the system. If you install PC133 modules with a 100MHz front side bus or PC100 modules with a 133MHz front side bus, your memory will only run at 100MHz

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by Cariad
last modified: 2002-08-26 11:09:37