dual channel vs quad channel memory

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Atreyo Bhattacharjee

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Feb 7, 2017
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What is the difference between dual channel memory and quad channel memory? Does dual channel memory have 2 ram sticks and quad channel 4? Also what does it mean when a chip set supports quad or dual channel memory?
 
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Eximo
You install 4 matching memory sticks. The board/CPU only has two memory channels, so you'll end up with two memory banks each with two sticks.
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gasaraki

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Jun 11, 2008
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When a board supports quad-channel memory, you need 4 memory sticks to get the 4-channels. However quad-channel boards also will run in dual or single channel mode when you use 2 sticks or 1 stick of memory. It just won't be as fast.
 
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Atreyo Bhattacharjee

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Feb 7, 2017
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So Ryzen is dual channel, but how can I run 4 sticks with it?

 
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clarkjd

clarkjd

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Dec 7, 2005
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A ram kit, be it dual or quad channel are sticks of ram that have been tested to work together. Now, since a quad channel kit will work together in a quad channel setup, All 4 will also be more likely to work in a dual channel setup that two dual channel kits, even if the dual channel kits are the same make and model.
 
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r34turbo

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Jul 2, 2017
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Hi just wanted some further clarification on this. Im having trouble getting my head around 1 channel doesn't equal 1 dimm. i.e. 4 channels doesn't equal 4 dimm.

I have the following setup. I wanted to use the following memory x 4 to make up 64gb. Will 4 sticks work with this cpu, or will only the first 2 get used (cpu is max 2 channels)?
Also, the CPU says DDR4-2133/2400. Does that mean the 3200 memory sticks aren't even being fully utilised?
thank you any help would help, I'm a total noob.

G.Skill Ripjaws 16GB Single DDR4 3200 Desktop RAM.

CPU: Intel i7-7700K.
Max Memory Size- (dependent on memory type) 64 GB
Memory Types- DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Max # of Memory Channels- 2

Mobo: Asus Z270 ROG Maximus IX Hero:
4 x DIMM, Max. 64GB, DDR4 4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666(O.C.)/2400(O.C.)/2133(O.C.) MHz Non-ECC, Un-buffered Memory
Dual Channel Memory Architecture
 
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