Quad channel config with 2 sticks of ram question

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xxxlun4icexxx

xxxlun4icexxx

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Jun 13, 2013
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Ok kind of a stupid question,

I was just going through my motherboard's manual on memory configuration and it confused me a bit.

I have 2 sticks or ram to put in my new build while I wait for my other 2 sticks to ship to me. When I look in the manual it says that for "4-channel cpu architecture" with 2 sticks to put 1 on each side of the CPU but for "2-channel cpu architecture" to put them both on the same side. But, don't for quad channel you need 4 sticks? I just want to know for the time being until my other 2 sticks get here where I should place the ram.

I guess it's supposed to be like the 4-channel architecture? I wasn't even aware x299 had 2-channel architecture cpus, I thought that was the whole point of them.

mem1_zps36rdcl5q.png


mem2_zpsgaxigzcn.png



 
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Dragos Manea

Dragos Manea

Splendid
Mar 30, 2015
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for quad channel dont buy 2 sets of 2 sticks, better buy a single 4 stick set, you might get freezes and bsod, because of the incompatibility. sets of 2 sticks are tested to work toghether only in 2 for dual channel configuration, some motehrboards even if they have 4 dimms they work only in dual channel, for quad channel is better to buy sticks that are guaranteed to work in 4 that is a single set of 4 sticks.
 
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geofelt

geofelt

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Oct 9, 2006
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Time to rethink your ram purchase.
Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
The internal workings are designed for the capacity of the kit.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards, can be very sensitive to this.
This is more difficult when more sticks are involved.
That is why ram vendors will NOT support ram that is not bought in one kit.
It is safer to get what you need in one kit.
But, it is a bit more expensive because of the added matching of all the sticks to insure compatibility.

Some X299 processors support quad channel while others support only dual channel.
That is why the diagram is a bit confusing.

When you get your 3rd and 4th sticks, try them out.
Intel is quite tolerant of ram. You may be lucky and all will work.
Success is not 100% guaranteed.
You may find that adding ram voltage in the bios can make things work.
Test the ram with memtest86.
You should be able to complete a full pass with NO errors.

If it fails, be prepared to return all the ram in favor of a single matched kit.
 
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xxxlun4icexxx

xxxlun4icexxx

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Jun 13, 2013
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aw crap I guess I messed up. Good I know sooner rather than later though. Hopefully my cat didn't destroy the box yet.

Alright I will do just that and test them out. Unfortunately what stinks is I don't think the type that I have even comes in 4-module kits. I suppose I'll have to return them and go with a corsair kit instead then.

Just curious, is this issue only present when you oc to XMP? Or could you get the bsods and freezes even at stock frequencies?
 
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xxxlun4icexxx

xxxlun4icexxx

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Jun 13, 2013
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I have not yet. Haven't booted everything up yet. But I know for sure my cpu supports 4-channel.
 
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