DDR4 setup for dummies

[Nena Trinity]

 

Please note that more rank(s) and/or more sticks of RAM will affect maximum speed of the DDR4, a quad rank will give worst overclocking results.

 

More ranks better how ever max speed may be reduced, quad-rank memory sticks are NOT supported on a consumer grade motherboards!!! >w<

 

Spoiler

 

What a quad-rank stick looks like.

 

Edit 2:

Rambling about DDR4 memory channels and ranks - YouTube

More detailed information. ((also beware some 16GB sticks can be single rank))

Edited February 20, 2021 by Nena Trinity
minor update

[GorujoCY]

thats pretty much it yeah

I used to think that placing a DIMM_1 and DIMM_3 would work well, which of course it will boot with it but since ive seen people like for example linus tech tips place it on DIMM_2 and DIMM_4, and on the manuals too, i realized that if everyone's doing then it's the "most correct" thing

[SavageNeo]

Edit: I was dumm

 

Also can you include memory channels (single, dual and quad)?

 

 

[Nena Trinity]

Just now, SavageNeo said:

The way i understand quad rank is that you have 2x dual ranks on single ram stick. not 4x dual rank on the motherboard.

Did you mean quad channel? 

 

or mayby i am from

Consumer grade boards are dual-channel only even if they have 4 DIMM slots for 4 sticks of RAM.

[SavageNeo]

7 minutes ago, Nena Trinity said:

Consumer grade boards are dual-channel only even if they have 4 DIMM slots for 4 sticks of RAM.

Edit: I was wrong sorry

[SavageNeo]

Edit: This list is pretty nice.

[Nena Trinity]

3 minutes ago, SavageNeo said:

yes i know. but you said quad RANK wont work at consumer boards. you did not use quad channel work anywhere i can see.

 

rank and channel is a different thing

Quad-rank sticks are VERY rare and most often found in servers to my knowledge, also these were quickly obsolete once the chips of the sticks gained more capacity and I am fairly sure is not in not even being made anymore...

  

Just now, SavageNeo said:

because this really confuses me. So i build pcs. I have used 4x16 gigs (4x dual ranks) on my x570 board to test the ram, and it worked well. Also have tested 2x single and 2x dual also worked. Currentyl using only 2x dual

Yes 4x of a dual rank stick will make it quad rank operation splitt on 2 channels, it might affect maximum speed of the stick due to the extra work the CPU memory controller and the board have to deal with, there are 2 types of boards topology and daisy chain. Topology ones is VERY important to use 2 and 4 over 1 and 3 since 1 & 3 are not able to use same speed as a daisy chain are equal upon all 4 DIMMs.

[SavageNeo]

Mayby I understood this incorrectly. So on the top right pic is quad rank in total (4x dual rank).

and on the bottom you say that quad rank sticks are rare.

I thought that you said that the 4x dual rank setup wont work since it is not supported. My bad if i understood this wrong. will edit my posts.

[WereCat]

7 minutes ago, SavageNeo said:

The way i understand quad rank is that you have 2x dual ranks on single ram stick. not 4x dual rank on the motherboard.

Did you mean quad channel? 

 

or mayby i am wrong?

 

 

You need Dual Rank sticks in all 4 slots to get Quad Rank. 

 

Quad Rank sticks are not supported in consumer motherboards. 

Meaning that you would get Quad Rank with 2 sticks or Octa Rank with 4 sticks. 

[SavageNeo]

2 minutes ago, WereCat said:

You need Dual Rank sticks in all 4 slots to get Quad Rank. 

 

Quad Rank sticks are not supported in consumer motherboards. 

Meaning that you would get Quad Rank with 2 sticks or Octa Rank with 4 sticks. 

Yep. this confirms is understood the post incorrectly.

[GorujoCY]

yep, also @Nena Trinity, could you do a similar graph with ECC Memory?

alltho linus did already make a video about ECC, maybe a quick graph and explaination of you in the forum would be great...

[SavageNeo]

Just now, GorujoCY said:

yep, also @Nena Trinity, could you do a similar graph with ECC Memory?

alltho linus did already make a video about ECC, maybe a quick graph and explaination of you in the forum would be great...

ECC is a bit harder. while normal singe rank dimm has 64bit bus width, ECC has 72 bit. But i would love to see that.

[Nena Trinity]

1 minute ago, GorujoCY said:

yep, also @Nena Trinity, could you do a similar graph with ECC Memory?

alltho linus did already make a video about ECC, maybe a quick graph and explaination of you in the forum would be great...

I am not as experienced with ECC and that is a tricky one since not all boards are supported... (also leaving Intel completely off LMAO)

[GorujoCY]

2 minutes ago, Nena Trinity said:

I am not as experienced with ECC and that is a tricky one since not all boards are supported... (also leaving Intel completely off LMAO)

yeah that's understandable, it's so laughable that AMD was the only one to provide ecc support (well unofficially but you get it)  on consumer motherboards haha

[Nena Trinity]

1 minute ago, GorujoCY said:

yeah that's understandable, it's so laughable that AMD was the only one to provide ecc support (well unofficially but you get it)  on consumer motherboards haha

Yeah but the issue is the board partner most allow it also... UwU

[Vins69]

Just a question: why is the last schema with ram 1-3 wrong, even if the manual says so?

[Nena Trinity]

16 minutes ago, Vins69 said:

Just a question: why is the last schema with ram 1-3 wrong, even if the manual says so?

Because if its the type of motherboard that prefers 2 sticks and not 4 the maximum speed of the sticks in 1 and 3 will be reduced by quite a whole lot...