Can PC100 and PC66 memory used together?

[acura]

I have a PC66 SDRAM DIMM 168PIN memory.
a friend has a spare PC100 SDRAM DIMM 168PIN, can
I use both RAM in my computer? Will they compatible?

 

[Mem]

You should be able to run both at 66mhz for your board,some different brands don`t like being mixed so the only way to find out is try it.

 

[heng1028]

i am running a stick of Siemen PC66 and a stick of LGS PC100 together in my K6-2

i think it should be no problem

but your bus speed is limited to 66 though

 

[MrPALCO]

Most SDRAM is backward compatible and can run at any bus speed slower than it is rated to run.

A PC133 SDRAM DIMM is capable of running at 133MHz, 100MHz, and 66MHz. There are some older motherboards that require 66MHz SDRAM and that will not accept PC100 or PC133 SDRAM, but there are times when this is not true.


Check here for in depth info on Ram issues.