can i use a 4 gb and a 2gb ram on a same ddr3 motherboard?

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Phillip Corcoran
You can but you shouldn't if the motherboard supports dual memory architecture, as DCMA only works if the RAM capacities match (ideally they should be bought as a matched pair).

Nothing bad will happen if you use two different RAM capacities, but your losing out on what is a worthwhile performance-enhancing feature.

Buying matched pairs has another good point, there's far less chance of the modules not playing nice with each other.
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Phillip Corcoran

Phillip Corcoran

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Sep 7, 2013
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You can but you shouldn't if the motherboard supports dual memory architecture, as DCMA only works if the RAM capacities match (ideally they should be bought as a matched pair).

Nothing bad will happen if you use two different RAM capacities, but your losing out on what is a worthwhile performance-enhancing feature.

Buying matched pairs has another good point, there's far less chance of the modules not playing nice with each other.
 
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MattBeastblood

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Mar 25, 2013
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That's how my PC was made. It came with a 4 and a 2. I bought an extra 4 and 2 too though, they're exact matches too.

Are there any performance issues with having 4+4 and 2+2? Are you losing anything? I do have each pair on separate channels obviously.
 
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