DDR4 2400 Vs 2666 MHz Ram Detailed Comparison And Our Best Pick

DDR4 2400 Vs 2666 MHz Ram Detailed Comparison

The DDR4 2400 Vs 2666 MHz RAM comparison is a hot topic in the PC world. RAM (Random Access Memory) is a crucial component, so anyone would expect this to happen.

But the big question now is, does higher RAM speed translate to real-world performance? Do you have to choose the lesser DDR4 2400 RAM or the much higher 2666MHz RAM?

We acknowledge the fact that RAMs have gotten super-fast, thanks to the advancement in technology. And knowing your computer system’s intended use and how that is influenced by RAM will help you make the right choice. You might or might not have a need to upgrade your current RAM if you know how this component of your system can impact performance.

After you have gone through this comparison, you should be able to make an informed decision. Keep reading to learn more!

A Table of Comparison between DDR4 2400 vs. DDR4 2666

DDR4 2400 DDR4 2666
Max. RAM speed (MHz) 2400 2666
Generation 4th 4th
CAS Latency CL17-17-17 CL19-19-19
Bandwidth Transfer rate – (MB/s) 19200  21300
Amount of Pins 260  288
Voltage 1.2V 1.2V
Memory storage capabilities 4GB, 8GB, 16GB, and 32GB only 4GB, 8GB, 16GB, and 32GB, 64GB.

2400 vs. 2666 Ram Memory Speed Comparison

Remember, we are comparing both RAMs, and as such, we need to consider the various features thoroughly.

We have a clear winner, in this case. But let’s not jump the gun. Let’s unravel their details on speed.

RAM speed is measured in Megahertz (MHz). And MHz refers to a million cycles per second.

Our first challenger, the DDR4 2400 RAM, boost a 2400 MHz memory speed. Its clock cycle speed per second is 2.4 billion.

The next challenger is the DDR4 2666 RAM. It boasts a memory speed of 2666 MHz, while the clock cycle speed per second is 2.666 billion.

Now, which of the two RAMs is faster?

Judging by their MHz, the DDR4 2666 appears to be the winner in this segment.

Please make no mistake; the DDR4 2400 isn’t a poor choice when it comes to speed. It will increase your computer’s speed, as well.

However, the DDR4 2666 comes built to handle more demanding tasks with incredible speed. It’s the type of RAM you want to have on your computer if you’re an avid gamer and someone that enjoys running high-end PC games.

If you want to save time, you need to consider more RAM speed, and this alone makes the DDR4 2666 a good choice. You can render, playing high-end games, run projects often, or editing without much stress.

But if you’re only using your computer to browse the internet, send emails, and do other less demanding tasks, RAM speed won’t mean that much to you.

NOTE – The DDR4 2666 and DDR4 2400 can work together. But since memory can't run at varied clocks, the 2666 RAM will be down-clocked to 2400MHz, so both RAMs can work together.

DDR4 2666 vs. 2400 CAS Latency Comparison

Our next comparison will be on the CAS Latency on the DDR4 2666 and the challenger, the DDR4 2400.

First, what does CAS latency (CL) means? The full meaning is “Column Address Strobe.”

CAS latency refers to the number of clock cycles that move from the point instruction is transferred to a column and when the data becomes available.

The myth most people believe is that the lower the CAS Latency, the faster and more expensive the RAM would be.

However, semi-conductor engineers have contrary views. From the knowledge and experience of these professionals, we understood that CAS latency isn’t an accurate indicator of RAM performance.

The easiest way of measuring latency (in nanoseconds) is to consider the CAS latency and RAM speed.

So, which among the DDR4 2400 and 2666 will offer better performance?

Because the DDR4 2400 and DDR4 2666 boasts almost the same latencies, the DDR4 2666 RAM will deliver better performance.

Why? It’s because of its memory speed is much higher.

With the DDR4 2666, you can run highly-demanding applications with incredibly high speed and responsiveness.

Note – Assuming both DDR4 RAMs have the same speed. Then, in this case, the RAM with the lowest latency will offer better performance.

Ram 2400 vs. 2666 Bandwidth Transfer Rate Comparison 

Now let’s consider the bandwidth between the DDR4 2400 and 2666 to know which is more superior and is a good choice for your PC.

The DDR4 2000’s bandwidth transfer rate is 19200 megabytes per second. With this memory in your laptop, lagging is generally reduced vastly.

Next is the DDR4 2666. This RAM’s bandwidth transfer rate is 21300 megabytes per second.

So, the DDR3 2666 comes out victorious in this bandwidth transfer rate comparison. It will allow your laptop to transfer small and big files at lightning speed.

2400 vs. 2666 RAM Number of Pins Comparison

Pins define a RAM’s data transfer capability. The higher the number of pins a RAM has, the better or stronger it would be for file transfer.

Looking at both RAM’s specifications, you can see that the 2400 RAM has 260 pins to its name. The 2666 RAM, on the other hand, has 2888 pins.

The winner here appears to be the 2666 RAM. It has more pins (288), ensuring faster and robust performance regarding data transfer.

2400 RAM vs. 2666 RAM Voltage Comparison

Power consumption is another crucial angle to compare these two RAMs (2400 vs. 2666).

Looking at the specifications, it’s evident that both RAMs require the same voltage. But how they use it differs.

The 2400 RAM saves approximately 20% power when in use. And that means you won’t be increasing your electricity bill by a fraction. Being energy efficient also translates into longer battery life. Your laptop battery would serve you longer before you find the next available power source.

The 2666 RAM does impressive with its ability to run smoothly on low voltage. This RAM can handle any workload thrown at it without slowing down your laptop.

Another intriguing thing about the 2666 RAM working voltage is that it runs quietly and doesn’t dissipate excess heat that will leave you feeling uncomfortable and sweaty while using your laptop.

Note – Most 2666 RAM offers reduced power consumption of over 40% and offers extended battery life. And this makes it more energy-efficient than its counterpart.

2666 vs. 2400 RAM Memory Storage Capabilities

The memory capability of a RAM can influence its performance significantly. So, let’s compare the DDR4 2400 Vs 2666 MHz Ram to know which is preferable.

The 2400 RAM features 4GB, 8GB, 16GB, and 32GB memories, and it lets you run large-sized programs without slowing down your laptop. But as you can see, the 2400 RAM boasts a reduced memory capability.

The 2666 RAM, on the other hand, features 4GB, 8GB, and 16GB, 32GB, and 64GB capabilities, making it the winner of this segment.

With the memory capabilities that the DDR4 2666 has, your laptop would work much faster when reading out data.

You will feel the power of the 2666 RAM’s memory capabilities when play highly-demanding video games with 3D graphics. It let’s you run larger-sized applications hassle-free.

DDR4 2666 vs. 2400 RAM Technology 

The 2400 RAM and 2666 RAM have different RAM technologies, making them unique.

The 2400 RAM boasts SO-DIMM RAM technology, while the 2666 RAM boasts an SD-RAM.

Let’s talk about the 2400 RAM.

With SO-DIMM RAM technology, you’re getting a DDR4 RAM that will boost your hard disk drives’ synchronization process.

And if you are an avid video game player, this RAM technology will offer you an improved gaming experience. You can run most big games with ease.

The DDR4 2400 SO-DIMM RAM is also classified a wise choice for notebook laptops too.

Next is the DDR4 2666 RAM. Let’s talk about this RAM.

The 2666 RAM boasts the SD-Ram technology, which is every sense, is more reliable and super-fast. This innovative RAM technology will make your laptop a machine.

The SD-Ram does the things that the SO-DIMM technology can do, and some more.

The price of the DDR4 2400 and DDR4 2666: Which is more budget-friendly?

Laptop enthusiasts consider many factors before splashing the cash on a RAM. And one of such factors is price point.

From the comparison thus far, it’s evident that the DDR4 2666 RAM boasts higher features. However, this RAM’s price point is higher and thus, it won’t be conducive for many users.

On the other hand, the DDR4 2400 is more affordable and boasts features that make it useful to beginners and experts.

The DDR4 2666 is a good quality RAM, no doubt. But with such higher price point and considering that it’s higher for most use, the DDR4 2400 RAM is the winner in the price category.

The DDR4 is also a good fit for most uses and can run most highly-demanding games, smoothly.


Final Note – Which is the best RAM for you.

So, this is our DDR4 2400 Vs 2666. Hope you now understand the differences and uniqueness between both RAMs.

For higher speed, the DDR4 2666 RAM stood out. It boasts higher MHz, memory capacity, CAS latency, and other features.

For the most budget-friendly, the DDR4 2400 appeared the winner. It has a lower price point, and to top it off, it can handle most demanding tasks thrown at it.

So, if you don’t mind the extra bucks and need a RAM with much higher speed to meet your needs, the DDR4 2666 is a wise choice.

But if you’re on a budget, and need a RAM upgrade that can deliver satisfying results, the DDR4 2400 fits the bill. This RAM has enjoyed positive praises from gamers across the globe.

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