Can i use only 3 ram slots when 4 are available on dual channel

Gufowner

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Jun 27, 2015
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4,520
Hello everyone
I am using a msi z97s sli krait edition mobo i currently have 8gb of ram 2x4gb kingston hyperx 1600 mhz on second and fourth slot ...i was wondering can i use one more 4gb stick of ram in the 3rd slot in single channel ?
it will be the exact same ram in the same speed
 

snowctrl

Distinguished
You cannot mix Single and Dual Channel RAM configurations

Check your mobo guide - you may be able to use three slots by switching to Single Channel - but probably better to just use two and stick with Dual Channel for the speed it gives