RAM Suppositions, Fictions and Misconceptions That Are Not True


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Published 1 Year Ago On Tuesday, May 2, 2023

What happens if you eventually mix RAM size? Or completely mismatch RAM modules? Is it good or bad? Here are several RAM Suppositions that you need to know about!

RAM (Random Access Memory) is one of the basic components of a computer or a smartphone. But there are many misconceptions about RAM, like whether you can mix RAM size or brands.

RAM's job is to remember computations for a limited amount of time so that your processor does not need to redo those computations each time. But there are misunderstandings about using different sizes of RAM together. For example, does RAM have to match? Should you use RAM with same speed? In this article, I will attempt to answer all these Questions.

1. You Can't Combine RAM Sizes or Brands: 

Most laptops or computers come with at least two slots for RAM sticks. Most modern motherboards will provide four RAM slots. There's a prevailing belief that you cannot use different RAM sizes together or that you cannot mix RAM brands. Example (4GB RAM and 2GB RAM ; HP RAM Brand Samsung Brand)

Simply put, that's not true. So, can you mix RAM brands or the size of your RAM sticks? The answer is Yes, you can mix RAM sticks and RAM sizes and even different RAM speeds—but mixing and matching RAM modules isn't the best for system performance.

For the best system performance, it is advisable to use RAM sticks by the same manufacturer, of the same size, and of the same frequency. But there's a simple reason behind why mixing RAM sizes is usually not the best option to maximize system performance. This is because RAM has several components that all come together to make it perform well.

RAM works best when paired with matching hardware. For optimal performance, your RAM should use the same voltage, and their respective controllers should play well with each other and the motherboard. That's why it's best to use the same RAM model in all slots.

However, this doesn't mean you can't use different size RAM sticks together. For example, if your first stick is 4GB, you can still add a new 8GB stick. Once you switch on dual-channel mode (also called flex mode), it will perform as two 4GB sticks running side by side in optimal performance.

The remaining 4GB of the new stick will run in single-channel mode. Overall, it's not as fast as using two sticks of the same size, but it's still faster than what you had before.

It's the same with frequency or speed. Your RAM sticks will work together at the frequency of the lower stick by default. So, do RAM sticks have to match? Must you use the brand of RAM in every slot? No, but it's better if they do.

2. I Don't Need More RAM because my System Have Enough RAM

Your RAM may be enough to run your apps, but that doesn't mean it can't be faster. More RAM helps, even if you use different sizes of RAM together. That's because of how programs are made.

Most developers write their programs so that the app requests a certain percentage of the RAM available. If you have more RAM installed, the same requested percentage will mean more size for the program.

Just because you're using only 60 percent (or any small percentage) of your total RAM capacity, it doesn't mean you don't need more RAM. Your regular tasks might only request 60 percent of RAM, saving the rest for other tasks you might start in the future.

As a general thumb rule for computers, 4GB is the minimum, and 8GB is the recommended size for best performance for regular users. Gamers, PC enthusiasts, and professionals who work with graphics, video, or sound should look for 16GB, while 32GB systems are becoming common. 

3. RAM Size Only Matters

When someone says they have more RAM in their PC, you automatically assume their system runs faster. But that's not necessarily true. The capacity or size of the RAM isn't all that is needed to make a computing device run faster. Among the determining factors of RAM performance are speed and frequency. Like with a CPU, RAM has clock speeds. The higher the clock speed, the more functions it can perform in a second. You'll often find RAM sticks with 2400MHz or 3000MHz frequency, while 3200MHz and 3600MHz are now the norm for high-end systems. Read Difference between Low Voltage RAM and High Voltage (Normal) RAM

One issue you may eventually encounter is a mismatched RAM speeds, which can affect you in two ways:

  • Firstly, if your RAM runs at 2000MHz but your motherboard only supports 1333MHz RAM, your system won't use the 700MHz difference between the two speeds.
  • Secondly, if you mix RAM modules with different speeds, both sticks will run at the slowest module's speed. So, if you had one stick of RAM running at 2400MHz and one running at 3600MHz, both sticks will run at the slower speed, wasting the faster RAM's potential.

Generally speaking, the regular computer user won't see much difference between 8GB and 16GB of RAM. However, changing it to a faster RAM of the same 8GB can lead to a significant boost. So, depending on how you use your machine, you should figure out which is more important for you: faster RAM or more RAM?

4. Clear Your RAM to Boost Its Speed

The belief that you should clear your RAM (with RAM boosters" and "memory optimizers.) to make it faster is one of the most persistent RAM fictions of all. 

Please don't clear your RAM at all so that it will retain some useful data that will help keep your system processes fast.

The job of RAM isn't to sit empty. In fact, your operating system and your software should be using up every little bit of RAM available. Freeing up RAM with one of those programs does nothing. If anything, it might actually slow down your system since "freeing up" means you are removing certain computations from the RAM's memory.

RAM isn't the same as your hard drive. RAM auto-manages the data it holds, adjusting to hold frequently accessed data. If you have 4GB of RAM, your system constantly writes, erases, and rewrites frequently accessed data in those 4GB.

That's not to say constantly filling your RAM is a good thing. If you constantly fill your RAM, it can lead to other speed issues. Most modern operating systems use what is known as a paging file, also referred to as virtual memory. Your computer will begin pushing some data from the super-fast RAM into the much slower regular memory.

Virtual memory is really useful as it stops your computer from completely becoming slow and unresponsive. However, if you frequently run out of RAM, Then it's time to purchase some higher-capacity RAM modules.

Back to the RAM clearing speed-boost fiction. Don't use RAM boosting or memory cleaning software. They don't work. At best, they're just a nuisance and a time-waste. At worst, you could introduce adware or scamware to your computer.

5. You Must Use an Equal Number of RAM Sticks

You don't have to use two or four, or six RAM sticks. No, you can use one stick of RAM—hence why manufacturers make and retail single sticks of RAM.

You can also use three sticks of RAM if you want, but as above, it can come at the cost of overall performance. If you have two matching 8GB RAM sticks, they will run in dual-channel mode, providing the most efficient and effective system performance.

Now, say you have three sticks of 8GB DDR4 RAM, boosting your total memory to 24GB. Great, right? Depending on your system configuration, the type of RAM you're using, and your motherboard, introducing the third stick of RAM could disable the dual-channel RAM support for the first two sticks of RAM. So, while you have a larger capacity, your overall performance may drop.

There are lots of debate regarding using an equal number of RAM sticks. Of course, you don't have to use an equal number, This is because it can harm your overall system performance if you decide not to.

7. "More RAM Always Results In a Faster PC"

In general, yes, if you add more RAM to your machine, it should result in a faster experience. If your computer was running low on RAM or you were using old, slow RAM, expanding and upgrading your hardware will deliver better results.

But there are a couple of scenarios where expanding your RAM won't deliver the blazing-fast speed upgrades you're expecting.

First, if your computer is having a low powered CPU and GPU, upgrading your RAM isn't likely to resolve the issue. For example, if you run an RTX 4080 with an aging Intel i5-3570K, the CPU just cannot keep up with the raw processing power of the behemoth GPU. In this case, it's the CPU that needs upgrading, not your RAM.

It's a similar story if you're using an old blotted hard disk drive as your main storage or boot drive. When the rest of your machine is high-specced, but your hard drive is old, it's not a RAM upgrade you need; you should be buying a new SSD.

Functionality of RAM on a Mac and iPhone devices is different

Apple has a different approach to RAM than PCs and Android phones, so many of the above rules go out the window. But don't worry, we have excellent guides to explain the differences.

The iPhone's base architecture is much different from Android. That's why you won't find Apple talking about how much RAM its iPhones have while they're still as fast as the best Android phones.

Unfortunately, not all Mac models allow you to upgrade your system RAM. For many Mac users, this is never an issue, but it can become an issue for some. 

In Conclusion

You can do a lot with RAM: mismatched sticks, different speeds, different sizes, and so on. For the most part, you'll just end up with a slower computer. Still, it is always best to match your RAM sticks. That way, you'll receive the best performance available, and there is less chance of corruption or other issues arising from mismatched memory modules.

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