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Mixing Memory Hi, my machine will not recognize two different memory speeds. I have two older DDR2 500 MB sticks that run at 533 MHz and one newer DDR2 1 GB stick that runs at 667 MHz. The two 533 MHz 500 M sticks work OK together, and the 667 MHz 1 G stick runs OK by itself. However, if you fit the 667 1GB stick and a 533 500 MB stick to give 1.5 GB memory, the PC shows the speed as that of the lowest stick (as expected) but only shows 1 GB memory installed. The machine has two slots and I've t


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You can't install two RAMs with different MHz on a single motherboard. Sometimes it works but, usually one of the RAM gets busted. This is based on my experience though.
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