Question If you mix RAM capacities, can you still run in dual channel?

shottyjotty

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Mar 12, 2013
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Specifically laptop memory. I'm using a Lenovo V155-15API laptop for some editing and starting to hit the useable 6gb of 8gb ram installed. One ram stick is soldered to the motherboard and the other is occupied by a 4gb stick.

If i replaced this stick with a larger one, would both the sticks run in dual channel until I start using 8gb+ of ram? Or will the whole thing just be single channel?