It’s not uncommon to have this type of inquiry discussed in technology online forums, so today we’re looking at the efficiency effect of having 4 DDR4 memory components in a dual-channel system, opposed to simply 2 components. In this situation all components are running at the exact same regularity, utilize the exact same timings, as well as give the exact same complete memory ability.

Dual- network systems such as AMD’s AM4 or Intel’s LGA1151 need 2 matched memory components for dual-channel procedure, including a 2nd set will just broaden memory ability as well as will not update you to quad-channel memory, for that you would certainly require a Threadripper or Cascade Lake- X cpu.

However, we have actually seen examinations around revealing a boost in efficiency by including 2 added components, purportedly without raising memory regularity, or enhancing timings.

We think this as a result of just how the memory is set up or a lot more specifically, the memory ‘ranking’. For those of you not aware, the term ‘ranking’ suggests the variety of 64- little bit memory rely on a component. Most customer quality memory includes a solitary ranking, though greater ability components are normally twin ranking, while web server quality memory is typically quad-rank.

Identifying if your memory is twin or solitary ranking can be challenging as software program does not constantly check out components appropriately as well as not all memory makers keep in mind the ranking in the components’ ID.

Typically, solitary ranking components include all memory chips on one side of the PCB, while twin ranking memory areas chips on both sides of the PCB. However, that’s not constantly the instance. A component with chips on both sides of the PCB is simply dual-sided, as well as can still be a single-ranked component, so it’s a little bit complex.

Things get back at messier when you present even more memory sticks or components. A system occupied with greater than 2 single-ranked components will in fact act as if dual-ranked components are mounted. In reality, there is really little distinction in between one dual-ranked component as well as 2 single-rank components when attached to the exact same memory controller, although the memory chips stay on various PCBs.

This is essential to keep in mind due to the fact that in the examinations we have actually seen all memory made use of has actually been single-ranked components. So when making use of 2 solitary placed components for dual-channel procedure, the memory is set up as a solitary ranking. However, when making use of 4 solitary ranking components for dual-channel procedure, the memory is currently set up as a dual-rank.

DIMM Module Rank Configurations

This can offer the 4 DIMM component setup a benefit as it permits numerous open DRAM web pages in each ranking. Although the rankings can not be accessed at the same time, they can be accessed individually as well as this suggests the controller can send out compose information to one ranking, while it waits on checked out information formerly picked from an additional ranking.

How a lot of an influence this carries efficiency depends upon the application as well as the memory controller’s capacity to benefit from open web pages. But what all this suggests is, yes it’s feasible for 4 components to boost efficiency over 2 components in a dual-channel system.

Demonstrating that we’ll check out a collection of criteria performed making use of a Core i9-9900 K as well as Ryzen 9 3900 X cpu. Supporting this examination is Team Group with their T-Force Vulcan Z DDR4-3000 memory. They have actually offered 2 8GB components together with 4 4GB components, all making use of the exact same timings.

Tests on the Intel system primarily happened on the Gigabyte Z390 Aorus Ultra motherboard, however we have actually additionally consisted of some screening on an inexpensive MSI B360 board. Then for the Ryzen examination system we have the Gigabyte X570 Aorus Master, both making use of an RTX 2080 Ti to minimize GPU traffic jams in our examinations.


First up we have Call of Duty: Modern Warfare where we see no noticeable distinction in between 2 as well as 4 RAM components, for both AMD as well as Intel dual-channel systems. This is possibly the type of efficiency you would certainly anticipate to see generally, however it’s not constantly the instance.

Here is an instance where we do see some distinction in efficiency for the Core i9-9900 K, however not the Ryzen 9 3900 X. The Intel system saw a moderate 4% efficiency increase when making use of 4 memory components as well as this was duplicated numerous times.

It’s a comparable tale with Shadow of the TombRaider The Intel system saw approximately a 4% efficiency increase, definitely not huge, however it was a distinction that we can replicate over as well as over. On Ryzen it really did not issue, 2 or 4 components created the exact same outcome.

Testing with Assassin’s Creed Odyssey was fascinating, we saw gains for both AMD as well as Intel when making use of 4 memory components. The Core i9-9900 K’s efficiency was increased by approximately 7%, as well as 5% for the Ryzen 9 3900 X. Clearly dual-ranked memory is of advantage in this title, at the very least under these problems.

An outstanding 1% reduced efficiency lead to Far Cry New Dawn with the 9900 K. Performance was increased by 9% as well as although the typical structure price is hardly boosted, it’s still feasible you would certainly observe the raised 1% reduced structure price. The Ryzen 9 3900 X system was constantly a couple of frameworks quicker with 4 RAM components, however not to the level where you would certainly observe a distinction.

The efficiency gains seen when totally occupying the DIMM ports in World War Z are fairly outstanding, below the 9900 K depended on 10% faster, while the 3900 X depended on 9% faster. Those are relatively considerable gains, though we are pressing more than 150 fps below.

We have actually re-tested a B360 board with the 9900 K mounted as well as we’re contrasting the World War Z results. Of training course, we’re restricted to DDR4-2666 on the secured chipset, however the factor was to see if 4 components still increased efficiency on a spending plan board and also as you can see below, they do as we’re taking a look at approximately a 6% efficiency rise. The margin isn’t fairly as considerable however we’re additionally running the memory at a reduced regularity currently.

And simply finally below’s a consider just how the DDR4-3000 CL16 memory contrasts to DDR4-3200 CL14 memory. Please keep in mind the CL14 memory does load a 32 GB ability as you can not obtain 3200 CL14 4GB components, however because World War Z does not need greater than 16 GB of memory, this will not influence efficiency.

What we think we’re seeing below with the faster memory is the Core i9-9900 K beginning to get to the limitations of the RTX 2080 Ti under these examination problems. Whereas formerly with the DDR4-3000 memory the 9900 K saw a 10% increase with 4 components, that margin has actually been lowered to 6% with the faster memory.

Wrap Up

Installing 4 memory components in a dual-channel system can boost efficiency in particular circumstances. However it need to be explained that this will not instantly convert right into a 5-7% efficiency increase in video games. For that to happen you require to be a lot more CPU minimal than GPU minimal which’s seldom the instance when making use of excellent graphics top quality setups or equipment setups.

For instance, we were evaluating with a GeForce RTX 2080 Ti at 1080 p. Increasing the resolution to 1440 p will likely lead to reducing the effects of any kind of advantage we simply saw with both added components as video games come to be mostly GPU bound. The exact same would certainly hold true at 1080 p making use of a minimal graphics card.

It’s additionally worth keeping in mind that 4 components can additionally restrict memory efficiency in the feeling that you could not have the ability to accomplish the exact same regularity as well as timings that you can with simply 2 components. In various other words, a straight contrast comes to be fairly challenging to make as there are a variety of variables that require to be thought about.

The Ryzen 9 3900 X is restricted to DDR4-2933 when making use of 4 components, whereas AMD’s main specification claims the CPU will certainly manage DDR4-3200 with simply 2 components. Depending on just how excellent the silicon is, the incorporated memory controller could do far better than that. Our chip manages right approximately DDR4-3600 CL16 memory with 4 components, however whatever the limitation, the factor is, it will certainly go higher with simply 2 components.

Dual- placed components present a brand-new collection of limitations, though none were discovered in this short article. AMD notes the main dual-ranked DIMM assistance as DDR4-3200 for 2 components, however simply DDR4-2666 when making use of 4 components. It would certainly interest see just how 2 as well as 4 dual-ranked components contrast in these dual-channel systems, however that’s an examination for an additional day.

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