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PC100 & PC133 Simultaneously??

L

lil guitar

Junior Member
Can I run both PC100 & PC133 simultaneously at their respective speeds? Or would the PC133 be slowed to run at 100Mhz? I have a Tyan s2380 motherboard and it seems that the Bios takes care of the clock speeds that's why I was curious as to whether they would be configured indepedently to run at both 100 and 133 Mhz


I've run PC100 together with an old 32Mb Dimm at 100Mhz before on another board with no side effects...I know that wasn't a smart idea, but it did work.
 
If the PC100 is CAS2 it would probably run at 133 CAS3 without any problems.

Even if it isn't CAS2, sometimes it works great anyway, just try it, it will definently not hurt the memory in any way.

But running the two different memory sticks on one memory bus at different speeds is impossible, the speed is not set induvidually on each memory slot, it is set by the memory bus, wich is the same for all dimms in a system.

Patrick Palm

Am speaking for PC Resources
 
your memory must all be run at the same speed. your cpu and memory can be run asyncronious but not diffrent memory sticks. If your pc 100 ram is 8ns it may be able to hit 133 mhz at cas 3, if you can risk the decresed stability then give it a shot. But i would suggest just running both sticks at pc100 cas 2 for the added stability, also cas2 pc100 is only about 2% slower then cas 3 pc133 that cas setting makes a greater diffrence then people realize.

ModemMix
 
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