Are you building a new office or gaming PC? Or maybe you need an upgrade. Everyone has to start somewhere. If you’re new to PC tech, it can be a lot to take in and seem pretty confusing at first.
Computer memory is referred to in many ways, such as a Dual Inline Memory Module (DIMM) or Random Access Memory (RAM).
However, you’ll also find many informal terms like:
- RAM Stick
- Memory Stick
- RAM Module
- Memory Module
- System Memory
- Single Channel Memory
- Dual Channel Memory
Plus, I’m sure there are many others I haven’t yet heard of.
Don’t worry, though. I’ll do my best to break it down into what to look for and things to consider before you make the choice.
By the end of this article, you’ll better understand RAM (Random Access Memory) and be better prepared when you’re ready to buy.
Of course, many other articles dive deeper into RAM, with many covering older standards like DDR3 and more.
Here, we’re not trying to give a history lesson on RAM, but rather the Cliff Notes version on current standards to help you make a smart purchase.
No fluff, just facts…and a few bad jokes!
Key Takeaways:
This article will help you better understand what to look for when choosing RAM for your PC.
- How much RAM do you need?
- DDR4 vs DDR5, which DDR memory should you choose?
- How many RAM sticks should you use?
- How to get the most speed out of your RAM.
- Choosing the right brand.
- Ways to save when purchasing RAM modules
Understanding the different RAM types, specs, and compatibility will help you make an informed choice.
Random Access Memory (RAM) Basics for Beginners
To start, let’s consider the basics. RAM (Random Access Memory) is your computer’s short-term memory. Memory timings, including CAS Latency and clock speeds, define your RAM’s performance. We’ll talk about all these specifications later in this article.
RAM also stores data your computer needs quick access to, like the information required to run programs and processes.
Think of RAM as your desk space. The more RAM you have, the more room you have to spread out your work, making everything quick and easy to get to.
Definition of RAM
Your computer’s Random Access Memory (RAM) temporarily stores data and applications while your computer is running. This allows the CPU quick access to recent information, such as applications and data files.
Think of it as the place where your computer does its thinking. However, RAM is a type of volatile memory, which means data is stored there temporarily while your computer is running.
However, once you turn your PC off, all the data stored is cleared until you turn it on again and start running programs and opening files.
RAM is required for your PC’s operating system and applications to run efficiently and allow multiple tasks to run simultaneously (multitasking).
Importance of RAM in a Computer System
The more RAM you have in your PC, the more applications you can run at the same time without any noticeable slowdown.
Going back to the “Desk” metaphor. As someone who works behind a desk, having more desk space for all my paperwork lets me quickly grab what I was working on recently.
This is why RAM is important, and in many cases, more is better (up to a point). Imagine juggling multiple tasks (work files) with limited desk space.
More RAM gives your computer the extra room it needs to handle everything efficiently. This is especially important for resource-intensive activities like gaming, video editing, and multitasking.
Having the RAM your applications (or games) need means your computer can access data more quickly, improving performance.
What are the different types of RAM?
There are a few types of RAM you should know about. We’ll focus on what’s current today and briefly mention some older types you may still come across.
DDR5 is the most common type of RAM in new pre-built Desktop PCs, having replaced DDR4.
However, DDR4 RAM is still a good option for anyone with a budget or who needs a basic desktop PC. Plus, as costly as RAM is nowadays, it’s a real consideration for many.
With DDR5, you probably wouldn’t notice the performance difference in your everyday Office PC.
However, on a Gaming PC, you can definitely tell. It’s like they designed it for gaming systems!
Of course, you’ll still find older types like DDR3. If you work in an office and your company still has you working on that Dell or HP computer that’s 10 years old, there’s a good chance it uses DDR3 memory.
How Much RAM Do You Need?
I get asked this a lot! The amount you need depends on what you do. For everyday tasks like browsing and streaming, 8GB is usually enough. Gamers and multitaskers might want to bump that up to 16GB, 32GB or more for heavy-duty tasks like video editing.
Choosing the right amount of RAM for your PC depends on how you plan to use it.
Let’s dig in a little deeper.
Basic office use
If you’re browsing the web, checking emails, or doing light office work, 8GB to 16GB of RAM should work fine.
However, towards the end of 2025, the cost of memory has skyrocketed! RAM is now 4-5 times more expensive due to shortages driven by demand for AI data centers. So you might consider starting with 8 GB for this basic office type of use.
PC Gamers
If you’re a hardcore gamer using a powerful graphics card (GPU) or often have several applications open at the same time, such as multiple web browsers, look for at least 16GB of RAM, up to 32GB or more when playing modern games.
This amount of RAM on your gaming PC will let you run multiple programs simultaneously without lag, especially if you play and stream online.
Content Creators
Graphic designers and video editors need the best performance. If this is you, consider investing in at least 32GB of DDR5 RAM.
The latest DDR5 memory spec offers much faster performance than DDR4. And while it’s the most expensive, you’re future-proofing your system, so you won’t need to upgrade for a while.
Does the amount of RAM affect performance?
Absolutely! With more RAM, your computer can process more tasks simultaneously, reducing lag and improving overall speed.
The CPU’s memory controller plays a significant role in determining how well your RAM performs, especially when overclocking or using advanced settings like XMP (Intel) or EXPO (AMD).
While it’s tempting to max out your computer’s RAM, there comes a point where adding more doesn’t provide noticeable benefits for everyday tasks.
For most of us, 32GB is enough for gaming, streaming, and even heavy multitasking. However, at today’s costs, you might be able to get away with 16GB.
So, unless you’re pushing your PC to the edge with high-end content creation, such as animation or video editing, or running VMs (virtual machines), anything beyond that—like 64GB—can feel overkill and might not justify the extra cost.
It’s all about balancing what you need with what you’re willing to spend.
So, if you tick the last box and punish your PC as a high-end content creator, go for that shiny new 64GB kit, or more if your Motherboard supports it.
Just keep this all in mind and take a moment to think about how you actually use your computer day-to-day!
How to Choose RAM Within Your Budget?
For some, budget is a big factor. If you have a spending limit, you’ll need to balance cost with performance.
Before RAM prices exploded at the end of 2025, I recommended spending more upfront to save more later. But at today’s prices, I suggest starting with the minimum for your use case, and hopefully, prices will come down in the near future. Just don’t break the bank unless it’s an absolute deal!
Also, look for discounts online! Sometimes you can find a good used system with reasonably priced RAM, since it may be some time before RAM becomes affordable again.
If you’re an Amazon Prime member, Prime Day is typically full of RAM sales. Also, consider sales that often occur around major holidays. If you can wait for these, it’s usually worth it.
My tactic is to add the RAM I’m considering to my cart and wait for it to go on sale. (fingers crossed)
Plus, several free browser extensions can help you find the best deal. I use the “Honey” extension for the rewards. However, Amazon now has its own native price history feature powered by Rufus AI, but it does not offer purchase rewards.
Lastly, think about future upgrades. RAM will hopefully return to affordability so you can upgrade later and save over today’s costs.
Ways to save money on RAM?
Think about what you need to do with your PC. Does the office suite software need the fastest RAM?
Probably not.
If you’re building a new PC on a fixed budget, consider using a motherboard that supports DDR4 RAM if you don’t need the absolute fastest PC memory. While still expensive, some DDR$ RAM kits are less than DDR5.
Paired with the right CPU for your needs, you’ll still have a PC that should last you many years.
Also consider used or open-box. Amazon often uses options from third-party sellers or returns they sell under Amazon Resale (formerly Amazon Warehouse).
Just be sure to check third-party seller reviews and return policies before purchasing.
Get the Best RAM Performance
Get all the speed out of the high-performance RAM you bought!
Make sure your RAM modules are installed correctly. For example, dual-channel mode, which uses two sticks of RAM, can offer better performance than a single stick.
This is why you’ll see memory sticks sold in kits like 16GB RAM kits, up to 128GB RAM kits, or more. Kits include two memory modules to fill the entire memory slot bank.
Your motherboard’s manual will guide you on which slots to use for installing your RAM for optimal performance.
What do RAM channels mean?
RAM channels are how memory slots are paired on your motherboard. Utilizing multiple memory channels, such as dual-channel or quad-channel configurations, will improve data transfer rates and overall system performance.
Most motherboards support a dual-channel setup, meaning you install two sticks of RAM to take advantage of increased bandwidth for faster data transfer.
Faster data transfer means better overall PC performance.
Think of it like having two lanes on a road instead of one—more lanes mean better traffic flow!
(I know another “roadway” analogy, but it’s a relatable comparison.)
While I’m sure you’ve already guessed it. Let’s take a look at what determines RAM channel configuration.
Single Channel RAM?
A single-channel configuration is when you install only one RAM stick. It’s straightforward but not the fastest option out there. So don’t do it!
Dual Channel RAM?
A Dual-channel configuration uses two RAM sticks working together, effectively doubling the data width and improving performance. Most modern systems benefit significantly from this setup.
This dual-channel configuration is why you’ll see RAM sold as kits.
Quad Channel RAM?
Quad channel, as you might guess, uses four RAM sticks. It’s mainly used in high-end gaming and content-creation PCs for better performance. However, it’s overkill for everyday PC users.
Don’t forget to enable XMP or EXPO
XMP (Extreme Memory Profile) or AMD’s EXPO is a feature that allows you to overclock your RAM for better performance.
This setting is in your PC BIOS, so your high-performance RAM will run at its advertised speed.
By default, XMP or EXPO is disabled on most computers. You would be surprised by how many prebuilt PCs ship with XMP or EXPO overclocking disabled.
Many BIOS settings offer high-performance preset profiles such as XMP1 and XMP2, and equivalent for EXPO.
Using XMP as the example, here’s what they do:
- XMP1: Typically offers a balance between performance and stability. It might not push your RAM to its absolute limits, but it’s more reliable.
- XMP2: Offers maximum performance but can be less stable. It often involves higher clock speeds and tighter timings, which can be more demanding on your system.
Where you start is up to you, but I always try the more aggressive settings first, such as XMP2. If I don’t have any system crashes, all’s good!
However, if you have problems with it, switch to XMP1. This preset works for almost everyone.
Alternatively, if your motherboard supports it, you can select “Auto,” though this setting should be used only if the other settings are unstable.
You can try some “manual” settings if you understand how to overclock RAM. While it’s fun to experiment, choosing one of the two presets is the best option for most.
Is Faster, More Expensive RAM Worth It?
It depends on your needs. For most users, mid-range RAM speed will perform just fine. Enthusiasts, and by that, I mean “Gamers,” can benefit from faster RAM up to a limit, especially in demanding games.
However, this is a difficult question to answer.
While CPU and motherboard manufacturers specify the RAM types they support (DDR4 or DDR5), they do not officially specify the supported speeds. However, some tech influencers will recommend an unofficial “Sweet Spot” for memory speed.
Motherboard manufacturers provide specs on the RAM speeds (clock speeds) they support, which vary across products.
DDR4 RAM speeds can range from 1600 MHz to 4800 MHz or more when overclocked.
DDR5 RAM speeds are much higher, ranging from 4800 MHz to 8000 MHz and beyond when overclocked.
These specifications change faster than the blink of an eye!
While “faster is better” for PCs, it doesn’t always translate into “best bang for the buck”.
So, I don’t have any specific advice to offer here other than to search online for memory benchmarking tests from a trusted tech evaluation lab or YouTube channel influencer to best gauge RAM performance sweet spots in specific games.
Is DDR5 Worth the Extra Cost Compared to DDR4?
As we mentioned before, PC memory is grossly expensive right now. SO, consider this when digging into the DDR5 versus DDR4 debate. It comes down to several things, such as budget, future-proofing, and how you use your PC.
Aside from current costs, DDR5 offers impressive specs, such as higher bandwidth and better power efficiency.
This means that for high-demanding use like gaming, video editing, etc., DDR5 can provide a noticeable boost in speed and responsiveness.
However, if you mainly use your PC for tasks like surfing the internet or watching cat videos, DDR4 works perfectly fine and may be slightly cheaper than DDR5.
Ultimately, if you’re that person who wants the latest cutting-edge tech on day one, investing in DDR5 will get you there, at a price!
Just know that DDR5 RAM with the highest speeds and better efficiency will be the most costly option.
So, if you’re building a cutting-edge system and have money to burn, “just go for it!” Otherwise, DDR4 remains a solid choice for most users.
What do those individual memory specifications mean?
So, you found some RAM you’re looking to buy, but you’re wondering what these “CL” numbers mean.
For example, a memory specification like CL16-19-19-39 might feel a bit overwhelming at first, but it’s just a way to describe the latency timings of your RAM.
Meaning how fast it can respond to a request.
So, let’s switch to some geek speak!
The “CL” stands for CAS latency, the number of clock cycles it takes for the RAM to access a specific data set.
So, let’s break it down.
- CL16 means it takes 16 clock cycles to do this.
- The second number (19) is the RCD (Row Address to Column Address Delay)
- The third (also 19) is the RP (Row Precharge Time)
- The last number (39) is the RAS (Row Active Time)
Whoa! What the heck does all this mean?
Let’s not overthink it. Just think of it this way: lower numbers typically indicate faster performance.
However, if you’re not pushing your PC to its limits, you might not notice this difference in everyday use.
But wait a minute, I just looked at some DDR4 and DDR5 RAM, and the CL numbers for the DDR5 are much higher!
Isn’t DDR5 supposed to be faster?
Regarding DDR4 and DDR5 specs, an apples-to-oranges comparison goes like this.
The DDR4 to DDR5 latency differences
It’s not “apples to apples”. While DDR5 offers significant improvements in speed and capacity over DDR4, it comes with a trade-off: higher CAS latency (CL).
- Frequency: DDR5 operates at much higher frequencies than DDR4. The memory modules must be designed differently to achieve these speeds, resulting in higher CAS latencies.
- Complexities: DDR5 introduces new features, such as on-die ECC and power management, which add complexity to the memory controller and increase latency.
Therefore, despite the higher CAS latency, DDR5 often delivers better performance due to its higher operating speeds.
This increased speed more than compensates for the latency disadvantage in almost every application.
Other Considerations When Choosing RAM
When shopping for RAM, it’s easy to get caught up in the numbers and specifications.
Consider the brand. Not all RAM manufacturers are created equal, and sticking with reputable brands will provide peace of mind regarding performance and warranty.
Although I have never had a RAM stick fail!
Additionally, there is only one good choice between single- and dual-channel configurations. Dual channel only!
I will never recommend a one-stick, single-channel RAM configuration with one exception. Given today’s costs, if you’re building a basic “for office use” PC and have no intention of playing modern games, a single stick of RAM could be an affordable option. However, most RAM is sold in kits (two sticks), so it may be hard to buy a single stick.
Cost aside, a two-stick dual-channel setup is preferred, as it enhances performance far more than a single stick.
Also, don’t forget about style! If you’re building a gaming rig, you might want RAM with RGB lighting to help you get your game on!
We didn’t talk much about RGB options because it’s a personal preference, but you can find RAM with or without RGB, so choose your preference.
Since RAM slots are close to the CPU, make sure that they’re not too tall to interfere with installing a CPU cooler. Trust me, it happens!
Motherboard Compatibility
When choosing RAM, make sure your motherboard supports it. Just because it fits, doesn’t mean your system will recognize it.
Your motherboard’s chipset and CPU determine which RAM types it supports, so it’s important to check your motherboard manual or the manufacturer’s website for compatibility.
Additionally, the number of RAM slots on your motherboard will determine how much RAM you can install.
For example, if you’re using a smaller PC motherboard with only two DIMM slots for RAM, you’ll need to verify the supported RAM capacity per slot.
Always check twice and buy once to avoid frustration with your new PC build or upgrade.
Laptop RAM Considerations
Laptop RAM is more compact and energy-efficient compared to desktop RAM.
Modern laptops typically use SO-DIMM (Small Outline Dual In-Line Memory Module) RAM. Go ahead and try to “Say that five times fast!”)
These smaller RAM modules are made to fit the compact design of laptops.
Just like with a desktop PC, when choosing laptop RAM, make sure your laptop’s motherboard supports it.
As with any computer system, the amount of RAM you need depends on your use.
However, if you’re buying a new laptop, consider getting the most RAM your budget will allow.
Why, you ask?
Because upgrading the RAM in some laptops requires opening the case, it is difficult for some models and increases the risk of damage.
Best Memory Brands
I have my favorite manufacturers. I trust those I’ve never had a problem with or whose customer service has been outstanding!
Overview of Top RAM Manufacturers
So, when choosing RAM, the brand can make all the difference in performance and reliability.
Here are some of the top RAM manufacturers known for their high-quality memory modules:
- Corsair: Known for its high-performance RAM kits, Corsair offers a wide variety of memory modules for both desktops and laptops. Their products are popular among gamers and content creators alike.
- G.Skill: This is the RAM in most of my PCs. G.Skill provides high-speed RAM kits with advanced cooling systems. However, direct-cooling kits for RAM other than heat spreaders are overkill, in my opinion.
- Kingston: This well-established brand offers a wide range of memory modules, including DDR4 and DDR5 RAM. Known for their reliability and performance, Kingston is a popular choice for many.
- Kingston FURY (formerly HyperX): Targeting gamers, Kingston FURY offers high-performance RAM kits with advanced cooling systems and stylish designs, making them a top choice for gaming rigs. Again, RAM cooling kits are overrated.
When choosing RAM, consider performance, compatibility, and price. Read reviews and do your own research to help you choose the brand that meets your needs.
Note: Crucial was known for offering high-quality RAM modules at affordable prices and was a popular choice for PC builders looking for dependable memory without breaking the bank. Unfortunately, their parent company, Micro, is no longer making consumer memory (and SSD products) due to the increased profits and the demand for AI solutions.
Frequently Asked Questions
How do I know if my chosen RAM modules will physically fit under my CPU cooler?
Since RAM slots are located close to the CPU, some modules with tall heat spreaders or RGB lighting can obstruct the installation of larger CPU coolers. You should check the RAM’s “clearance” or “height” specifications (measured in mm) and compare them with the allowable clearance listed in your CPU cooler’s manual.
Can I mix one stick of DDR4 and one stick of DDR5 on the same motherboard to save money?
No. Motherboards are designed to support either DDR4 or DDR5, but not both simultaneously. The physical slots are keyed differently, meaning a DDR5 stick will not fit into a DDR4 slot and vice versa. You must choose a motherboard that supports the specific RAM type you intend to use.
What happens if I install RAM but forget to enable XMP or EXPO in the BIOS?
If XMP (for Intel) or EXPO (for AMD) is not enabled, your RAM will default to a standard industry speed (JEDEC), which is often much slower than the high-performance speed advertised on the packaging. Your PC will still function, but you won’t be getting the full performance you paid for.
Is there a performance penalty for filling all four RAM slots on a consumer motherboard instead of just two?
While filling four slots provides more total capacity, it can sometimes put more strain on the CPU’s memory controller. This may limit your ability to reach the highest possible overclocked speeds (XMP/EXPO) compared to using a two-stick kit, particularly on newer DDR5 platforms.
How do I identify if my laptop uses soldered memory or SO-DIMM slots before I buy an upgrade?
You can check this by looking up your specific laptop model’s “service manual” or technical specifications on the manufacturer’s website. If the memory is “soldered” or “on-board,” it cannot be upgraded. If it lists “SO-DIMM slots,” you can physically swap or add modules.
Final Thoughts on Choosing RAM
We discussed the key differences between DDR4 and DDR5 RAM, including that while DDR5 offers higher CAS latency, its overall performance is better due to higher speeds, making it an excellent choice for most applications.
Also, when choosing RAM (random access memory) for your new PC build, it’s important to consider the brand and always install the memory sticks in at least a dual-channel configuration for better performance. This is, of course, if your budget can tolerate the overinflated costs of PC RAM available today.
Lastly, motherboard layouts can vary. So, remember to check the height of your RAM sticks to avoid compatibility issues with your CPU cooler.
Choosing the right RAM doesn’t have to be a headache. By understanding your needs and doing some research, you will find the perfect match for your system and budget.
