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Mixing up 1066mhz ram and 1333mhz ram

This is a discussion on Mixing up 1066mhz ram and 1333mhz ram within the RAM and Power Supply Support forums, part of the Tech Support Forum category. Can i mix both 1066mhz and 1333mhz laptop rams together? Do they have any bad effects or something after i


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Old 04-21-2011, 10:31 AM   #1
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Can i mix both 1066mhz and 1333mhz laptop rams together? Do they have any bad effects or something after i mixing these 2 types of rams?

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Old 04-21-2011, 10:38 AM   #2
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Mixing different speeds/brands/voltages of ram is generally considered a bad idea. Sometimes the "faster" memory will get clocked down to the slower ram's speed but there is definately a high chance that the result will be unstable. With that being said, i've seen it done without problems once or twice. You probably wouldn't hurt anything physically but there isn't a definite chance that everything will run smooth and stable.

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Old 04-21-2011, 10:41 AM   #3
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I should probably add that it depends alot on the mobo. For example, your mobo might not except the higher speed memory.

Hope that helps
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Old 04-21-2011, 10:45 AM   #4
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I also agree with the idea that if the motherboard runs the RAM together, the speed will be dropped to the higher matching speed available. Give it a try, and use a program like Speccy to check the RAM afterwards. I can bet they will both operate at 1066MHz.
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Old 04-21-2011, 05:17 PM   #5
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Mixing RAM brands/specs is not advised and commonly results in problems.
Brand & Model Number of the laptop?
Brand & Model Number of the RAM(s).

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