Question Using 4 RAM sticks instead of 2 on a Dual Channel motherboard ?

[elegendx]

Hello.
I want to ask about RAM with a DUAL Channel motherboard. I have noticed on YouTube, some owners who have a DUAL Channel motherboard, they have installed 4 instead of 2 RAM sticks. Why do some people put 4 sticks in their system and not 2? Does it play a role, for example, in bandwidth?

 

[Colif]

most motherboards have 4 slots, 2 lots of Dual channel. So each set of 2 sticks runs in its own Dual channel.

More bandwidth yes, more channels for CPU to access at once.

 

[SkyNetRising]

Why do some people put 4 Modules in their system and not 2?

Because they wan to use more than 2 modules.

Does it play a role, for example, in bandwidth?

No. It actually introduces multiple issues.

 

[kerberos_20]

if we exclude higher strain on memory controller, then fps in games is higher then with just two sticks on cpu intensive games due to memory interleaving and thus cpu waiting less for free banks

 

[Kona45primo]

On AM4 it MAY give a slight increase in performance, but as stated above, it can cause more problems than it's worth. Gamers Nexus in think did a breakdown.

View: https://youtu.be/-UkGu6A-6sQ?si=woIY76L3Nbbt5ISx

 

[Colif]

It can depend how much ram they want too, max dimm size for DDR4 is 32gb, so if you want more than 64gb of ram, you have no choice but to use 3 or 4 sticks.

If all 4 sticks are part of the same set, it should work reasonably well. Mixing sets together can lead to errors.

 

[elegendx]

Okay.
@Colif, if I understood well, If I install RAM 4 Modules, I will have more bandwidth. Right?
I ask you, because @SkyNetRising said,

No. It actually introduces multiple issues.

I open post because I want to know and I learn about RAM why someone install RAM 4 Modules on motherboard at Dual Channel.
Also, I want to upgrade RAM from 32GB to 64GB.

My Computer is:

• Motherboard: ASUS ROG STRIX B550-F GAMING (WI-FI)
• Graphics Card: ASUS ROG -STRIX-RTX3060TI-O8G-V2-GAMING NVIDIA GeForce RTX 3060 Ti 8 GB GDDR6
• CPU: AMD Ryzen 9 5900X Box
• SSD OS: Samsung 980 Pro SSD 1.0TB M.2 NVMe
• SSD Data: Samsung 870 QVO SSD 2TB 2.5
• RAM: G.Skill TridentZ Neo 32GB DDR4-3200MHz (F4-3200C16Q-32GTZN)
• HDD Data: Seagate Barracuda 4TB
• HDD Data: WD Red Plus 4TB
• PSU: Corsair Power Supply 850W ATX 24 pin RM850x (2021)
• CPU Cooler: Noctua NH-D15 chromax.black

I want to buy new RAM and I'm between F4-3600C14Q-64GTZN and F4-3600C16D-64GTZN. Because, 1o) I used the Formula for calculating RAM latency and I found the value for the F4-3600C14Q-64GTZN is 7,78 and the other RAM F4-3600C16D-64GTZN is 8,89. Also, I saw that, the RAM F4-3600C14Q-64GTZN has got low value and it's speed. 2o) I haven't understood yet, because, some people say and prefer RAM 2 Modules.
Which is better to buy?

 

[Colif]

F4-3600C14Q-64GTZN

if your motherboard can support it, i would get those. Lower latency better reaction time.

Its not as simple as 2 or 4 sticks - you have to know if the sticks are single or dual ranked.
If your current RAM is dual ranked, 4 sticks will limit how fast you can run the memory greatly.
4 sticks SR or 2 sticks DR is the way to go, unless you want to go for crazy high memory overclocks then 2 sticks SR will get you that. But 2 sticks DR can perform better because each rank/bank can be accessed separately.

The 2 v 4 thing is about how many ranks of memory the CPU can address. Within a given channel, the CPU can start addressing a second rank of memory while its waiting for the first rank to finish what its doing. Think of it like starting a conversation with a second person while the first person you were talking to is still saying goodbye. You can have single or dual ranks on a single stick of RAM, 8GB can be single or dual, 16GB is almost always dual.

Since 16GB sticks are almost all dual rank, so there won't be much of a performance difference in terms of that, so I'd go with the 2x16 kit for the faster access.

link

 

[SkyNetRising]

if I understood well, If I install RAM 4 Modules, I will have more bandwidth. Right?
I ask you, because @SkyNetRising said,

You get more ram capacity.
You don't get more bandwidth with 4 modules on dual channel board.

On quad channel system like Threadripper you'd get additional bandwidth with 4 ram modules.

 

[elegendx]

You get more ram capacity.
You don't get more bandwidth with 4 modules on dual channel board.

On quad channel system like Threadripper you'd get additional bandwidth with 4 ram modules.

I saw on website G.Skill F4-3600C14Q-64GTZN that the Multi-Channel Kit: Dual/Quad Channel Kit.

What do you suggest i buy finally?

 

[SkyNetRising]

I saw on website G.Skill F4-3600C14Q-64GTZN that the Multi-Channel Kit: Dual/Quad Channel Kit.

What do you suggest i buy finally?

What is your workload?
Does it actually require 64GB of ram?

Anyway - if 64GB realy is necessary, then get a dual channel kit (2x32GB).

 

[elegendx]

What is your workload?
Does it actually require 64GB of ram?

Anyway - if 64GB realy is necessary, then get a dual channel kit (2x32GB).

Montage video, Photo editing, design, 3d animation and modeling and vfx.

 

[elegendx]

Hello again.
I haven't bought G.Skill F4-3600C16D-64GTZN yet, because, I looked my ASUS ROG STRIX B550-F GAMING (WI-FI), the RAM doesn't exist. Also, I looked in G.Skill at RAM Configurator, and for example, it has got the G.Skill F4-3600C18D-64GTZN.
If I install G.Skill F4-3600C16D-64GTZN,will my pc work? Also, if I install G.Skill F4-3600C18D-64GTZN, would my pc be slow or not?
In addition, what is different RAM Hynix vs Samsung? About the samsung, I saw someone wrote Samsung B die. What's this?