4GB 1600mhz + 2GB 1333Mhz

UdithaKasun

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May 2, 2015
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I have Acer Aspire E5-571G laptop with Samsung 4GB DDR3 1600Mhz ram. I have a extra 2GB kingston DDR3 1333Mhz ram. I want to add this 2GB ram to the above 4GB ram laptop to make it 6GB. Will it be complatible ??? what speeds will both ram run ?? Will perfomance decrease with both rams clocked to 1333mhz??