How much RAM does your Windows PC really need?

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RAM, or random access memory, is a vital hardware component used by your Windows PC to store temporary data that can be accessed quickly by software. This helps to speed up processes and keeps you from banging your head against the desk in frustration. Essentially, the more RAM you have, the more you can have going on at once, which is why workstations and servers tend to have a lot.

The amount of RAM you need in your PC depends on what you plan on doing — gaming, for instance, uses a generous amount of RAM, and video editing will also appreciate more of it. But if you're a casual user, mainly browsing the web and using lighter apps, you probably don't need to spend your budget on RAM you won't need. 

Let's show you how to determine how much RAM you currently have, what type of RAM is compatible with your system, and how much RAM you should have for your regular PC usage. 

Benefits of upgrading your RAM

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RAM (Image credit: G.SKILL)

Let's get one thing straight: adding RAM to your computer is not a process that will magically make everything faster. It will, however, aid your PC in multitasking and performing heavy duties like gaming and multimedia editing. More RAM doesn't make the computer faster, but it will make it harder for it to get bogged down, which in turn can feel like a performance increase.

If you have a PC with a beefy graphics card (GPU) and fast processor (CPU) but you can't figure out why 17 browser tabs won't simultaneously load without grinding things to a halt, adding RAM will probably help.

If you have an older PC that you want to eke a few more years out of, adding RAM could make the difference between a couple of years of frustration and a couple of years more fond memories.

How much RAM do you really need?

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How much RAM you need in your PC depends heavily on what you use your PC for on a day-to-day basis and on how long you intend to keep the computer. If you're thinking of investing in a completely new machine in the near future, waiting things out might be the best bet.

If you already have a computer you love but want to shift gears into a different daily task that requires better performance, upgrading your RAM as part of the process is a great idea.


If you use your Windows computer for word processing, checking emails, browsing the internet, and playing Solitaire, you should have no problem using 4GB of RAM. If you are performing all of these activities at once, however, you might experience a dip in performance.

A lot of budget PCs come with 4GB of RAM as a base option, but if you plan on keeping your machine for several years, opting for 8GB of RAM is the safer bet, even if you only use it for light duties. While 4GB is manageable, it's not recommended, and if your budget allows 8GB is a much smarter play in the long-term. 


I'm not talking about Solitaire — heavy PC gaming at acceptable performance levels requires a substantial amount of RAM. Popular esports titles like DOTA 2, CS:GO, and League of Legends will allow you to get away with minimal RAM, but most other popular titles will need at least 8GB to run properly. More demanding games are already asking for 16GB or even 32GB of RAM if you want to run them at their absolute best. 

If you're a gamer and want to ensure you have enough RAM for some current titles and future titles, go with at least 16GB. If your budget allows, go for 32GB, you'll be better off in the longer term. 

Virtual reality (VR)

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VR requires a good chunk of RAM to run smoothly. I'm referencing HTC Vive, Oculus/Meta, and Windows Mixed Reality (WMR) here, all of which should have at least 8GB of RAM on the associated PC to run smoothly.

VR is extremely demanding, though, and for a better all-round experience you should be looking to have at least 16GB on hand. 

Streaming to Twitch, YouTube, Facebook

If you'd like to join the thousands who stream video of themselves playing games or other activities, go with at least 8GB of RAM but consider opting for 16GB or even 32GB. If you only have one PC to both game and stream from, get as much as you can. 

If you're running a dual-PC stream then 16GB in each should be plenty. Your games will be good and your encoding rig will have enough resources available to keep your stream going.

Video and photo editing

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This really depends on your workload. If you're editing a lot of video, go for 16GB or more, especially if you're dealing with 4K footage. If you're working with photos and a bit of video thrown in, 8GB should get you through.

Editing apps will work on lower amounts of RAM, but you'll become so frustrated with the poor performance you'll soon start yearning for an upgrade. Don't skimp here.

Choosing RAM speeds

RAM (Image credit: Future)

Not only do you need to think about how much RAM you have, you also need to think about the speed of the RAM in your PC. RAM's frequency affects the maximum bandwidth. If you want more data to be moved back and forth at once, you need to go with RAM with a higher frequency. Latency, on the other hand, is how fast your RAM realizes it needs to act when the CPU calls on it.

Column Access Strobes (CAS) latency has increased as the frequency of RAM has increased, but true latency has remained about the same due to a decrease in clock cycle times. That means you can get high-speed DDR4 RAM with about the same true latency as older DDR3 RAM that's only about half the speed.

If you're doing any sort of high-performance task on your PC, opting for a higher frequency — measured in megahertz (MHz) or megatransfers (MT/s) — is the best plan of action.

How to check your PC's current amount of RAM

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RAM configurations differ depending mostly on your motherboard. Some motherboards have four dual inline memory module (DIMM) slots for RAM, some have two, some have a lot more. Here's how to see how much RAM you currently have, what type of RAM is compatible with your PC, and how many slots you're currently working with.

This method will simply and quickly tell you how much RAM your PC currently has installed:

  1. Right-click the Start button.
  2. Click System.
  3. Verify the Installed memory (RAM) line. (In this case, you can see I have 8GB of RAM installed.)

How to check RAM configuration and compatible RAM using Crucial System Scanner

To take things even further, Crucial System Scanner is a great app that will scan your computer and show you how much total RAM your motherboard and processor can handle, how many slots are available for RAM, and some options for purchasing compatible RAM.

  1. Navigate to
  2. Click the checkbox next to Agree to the terms & conditions.
  3. Click download the scanner.

  1. Click Save. The download will begin.
  2. Click Run when the download is complete.

When the scan is complete you will see on the left side of the window a memory section with the number of slots for RAM and the maximum amount of RAM your PC's motherboard can handle. In this case, the motherboard has two slots and can handle up to 32GB of RAM.

You will see on the right side of the window a list of compatible RAM available for purchase from Crucial. This is a clear indicator of what type of RAM your PC uses, and is a great tool for anyone not comfortable with buying RAM on their own.

RAM is available in two common types in newer systems: DDR4 and DDR5. DDR5 is newer than DDR4 and uses a different pin configuration to fit into your motherboard. For this reason, DDR4 RAM can't go into a motherboard designed for DDR5, and vice versa. Also, "small outline dual inline memory module" (SODIMM) RAM won't fit in a standard RAM slot — it's just too small. If you're using a laptop or an all-in-one PC, chances are you've got SODIMM RAM inside, so keep that in mind when you're buying a new kit.

Cale Hunt

Cale Hunt brings to Windows Central more than eight years of experience writing about laptops, PCs, accessories, games, and beyond. If it runs Windows or in some way complements the hardware, there’s a good chance he knows about it, has written about it, or is already busy testing it. 

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