3 Dimm per Channel?

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eviLocK

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Jun 7, 2016
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Hello I am planning to get a CPU listed with "Dimm per Channel: 3" onto an ASRock X-99 WS motherboard.

The motherboard accepts 8 rams in-total with up-to Quad Channel Memory Technology support.

Consider this case, so even if I put 4 rams there, I can only have Triple Channel memory support with 3 rams and the 4th ram not working at all?

Am I correct?
 
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Rogue Leader


1 RAM in each channel. That will give you quad channel RAM. Check the manual to confirm but looking at your board you would put all 4 in the 4 black slots (as those are marked A1, B1, C1, and D1). They are color coded to seperate the channels.
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Rogue Leader

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No, X99 and the related processors have quad channel memory support, so each DIMM (of 4) will be on its own channel. If you have 8 DIMMs 2 of each will be on its own channel. There are some boards with a 3rd set of DIMM slots, and that (if you populate them) will give you 3 DIMMs per channel which is the limit. If you had a board with a 4th set of DIMM slots (maybe some server boards? I don't even know), they would not work with that processor.
 
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Rogue Leader

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Its CPU as well as the chipset and motherboard. So there are LGA 2011 CPUs (probably Xeon E5) that may support more than 3 DIMMs per channel. However of course the motherboard would need more channels on it to do that, something that is not an issue with a consumer board. Point being your CPU more than supports the amount of memory in quad channel you could throw at it with a motherboard that has 8 DIMM slots.
 
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eviLocK

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Jun 7, 2016
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Sorry I still don't quite understand.

So for a case of a CPU that supports up to 3 dimm per channel and the motherboard has two sets of 4 dimms (8 slots in total) with Quad technology, how should I configure rams if I have four sticks of them?
 
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Rogue Leader

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Dec 22, 2014
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1 RAM in each channel. That will give you quad channel RAM. Check the manual to confirm but looking at your board you would put all 4 in the 4 black slots (as those are marked A1, B1, C1, and D1). They are color coded to seperate the channels.
 
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