The Best $900 Gaming PC Build in 2021

Updated: September 7th, 2021By: BrantonGaming PC Builds, Mid-range Builds605 Comments

best gaming pc build 900 dollars
best gaming pc build for 900 dollars

Looking to build yourself the best $900 Gaming PC possible? This might just be it. Featuring an AMD R5 3600, a brand new RX 5700, 16GB of DDR4 RAM, and 500GB of pure SSD storage; you'll be gaming comfortably for a long time!

Building a gaming PC with around $900 gets you something that will run the majority of the newest games on ultra settings in 1080p without an issue and will also deliver very decent 1440p performance, depending on the game 60fps shouldn't be an issue in 1440p.

This powerful PC is going to put you ahead of the game by giving you way more performance than you're paying for. But, keep in mind that the price is for just the tower, if you need other peripherals or an operating system, those will be counted separately from the price listed below.

Have a question? Ask me in the comment section

Prebuilt Option

Not feeling the DIY approach? Just want a gaming PC that'll work right out of the box? With a prebuilt gaming PC, you can do that. They come fully assembled with Windows 10 already installed. The only thing left for you to do is plug it in and turn it on!

With that in mind, here's a good prebuilt alternative with similar specs and pricing as the DIY build found on this page.

SkyTech Shiva

  • CPU: AMD R5 2600
  • GPU: 6GB RTX 2060
  • RAM: 16GB DDR4 RAM (3000MHz)
  • Storage: 500GB SSD
  • Connectivity: WiFi + Ethernet | 1 x HDMI, 4 x USB 3. 1 Gen1 Ports, 2 x USB 2. 0
  • Comes with Windows 10 Home (64-bit) installed
  • Comes with a keyboard + mouse
  • 1-year parts + labor warranty | Free lifetime tech support
  • The Best $900 Gaming PC Build

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    Phanteks Eclipse PH300

    Mid-tower ATX case with a great layout and awesome cable management for a clean build. Comes with a 120mm fan

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    MSI ProSeries AMD Ryzen B450APROMAX

    AM4 socket ATX motherboard running the B450 chipset. Equipped with 5x USB ports, 6x SATA, and 1x M.2.

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    AMD R5 3600

    6-core/12-thread 4.2GHz 3rd generation AMD Ryzen processor. Comes with a good CPU cooler. Can be overclocked.

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    Gigabyte RX 5700 Gaming OC

    8GB GDDR6 graphics card, 4 display outputs, amazing 1080p and good 1440p performance!

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    Thermaltake Smart BX1 550W

    A good 550W non-modular power supply with an 80+ Bronze rating. Comes with a 5-year warranty.

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    16GB Corsair Vengeance LPX

    2x8GB 3000MHz C15 DDR4 RAM.

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    WD Blue 500GB SSD

    An awesome 500GB SSD to use as your primary storage drive, or boot drive. This build can easily support another 5 drives.

    Recommended Add-ons

    Although not entirely necessary, some add ons like optical drives can sometimes improve your experience. Some, like an operating system, are significantly more crucial. If you’re installing your operating system from a disc opposed to a USB flash drive, then you’ll definitely need an optical drive.

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    Windows 10 (USB Installer)

    Windows 10 is your best bet when it comes to picking an operating system. This version is a USB installer.

    portable DVD writer

    Samsung Ultra-Slim External CD DVD±R/RW

    External optical drives are quickly overtaking their internally mounted counterparts in both popularity and practicality, and it’s easy to see why! This one is definitely one of the cheaper & better options to consider.


    The tools you need:

    That’s really all you need to assemble your new desktop. All of the mounting hardware and cables will come with the parts listed above. The only time you might need something extra is if you’re modifying the build on this page.


    Super Simplified Build Steps:

    1. Install the power supply into the case
    2. Install the processor (CPU)
    3. Seat RAM in the motherboard
    4. Mount the CPU cooler (don’t forget thermal paste if you're not using a stock cooler!)
    5. Insert the motherboard’s rear I/O plate into the case's rear I/O slot
    6. Mount the motherboard in the case (get your i/o ports through and use the middle standoff as a guide)
    7. Plug your graphics card into the motherboard
    8. Install storage drives
    9. Plug all power and data cables in where they're required (storage, case, motherboard, graphics card, etc)
    10. Turn your PC on
    11. Install your OS
    12. Install and update ALL drivers
    13. DONE!

    In-depth Walkthrough

    If you’ve never built a computer before, then you probably want to take some time to learn the basics before getting ahead of yourself. To do that you have a couple of options you can choose from.

    The first, and probably the easiest way for most people to learn is finding a walkthrough on YouTube from a reputable tech channel. Here’s one by BitWit as an example.

    Alternatively, I’ve put together an in-depth guide on how to build a PC as well as a FAQ to address the most common questions and problems. I've also put together a short post covering 10 of the most common mistakes people make when building.

    Build Breakdown

    This might be one of the best $900 gaming PC builds out there, and it is going to easily run any game you can throw at it in 1080p. Most AAA games will run on ultra settings @ 60fps or better, but less graphically intensive games will run at well over 100fps.

    Keep in mind that the price above is for the core components only, you will still need an operating system, and any other peripherals you don’t currently have.

    Case: Phanteks Eclipse PH300 is an awesome mid-tower ATX case. It gives you a handful of premium features without asking you to spend a premium price. It's equipped with a full PSU shroud and good cable management options for a clean build, a big tempered glass side panel, and overall good airflow options.

    It comes with 3 fans so you likely won't need more.

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    Motherboard: The MSI B450-A Pro Max ATX motherboard is a great choice at this level that's loaded with all of the features you might need for an AM4 socket build like this; including 6x USB ports, 6x SATA ports + 1x M.2, integrated audio, 2 case fan headers, room for 4 sticks of RAM, a built-in ethernet controller and lots of room for future expansion.

    The B450 chipset does support CPU overclocking, which means you're free to crank up the power on your R5 3600 assuming you have adequate cooling.

    Processor (CPU): AMD's 3rd generation R5 3600 is a very strong 6-core/12-thread 4.2GHz processor that's basically perfect for a gaming PC like this one. Not only is it a solid CPU for gaming, but it's also great when it comes to work-oriented tasks as well. As a bonus, the R5 3600 comes with a good CPU cooler, but you can always replace it with something aftermarket if you'd prefer, or if you want to try some really intense overclocking - why not check out a list of the best CPU coolers?

    Graphics Card (GPU): AMD's new RX 5700 and its 8GB of GDDR6 VRAM is a complete and utter powerhouse when it comes to 1080p gaming - it's also capable of tackling 1440p without a problem while pushing 60fps in most games.


    Gigabyte's RX 5700 Gaming OC is absolutely no exception. It runs quiet, cools great, has 4x display outputs (3x DisplayPort, 1x HDMI), and easily fits inside almost any case with ease. It's very capable of 1440p 60fps gaming in any game out there and it can easily support VR headsets like the Vive or Rift.

    System Memory (RAM): 16GB of 3000MHz DDR4 RAM from Corsair's Vengeance LPX lineup is a perfect amount, and speed, for any gaming PC. Running 16GB ensures that you won't run into any RAM-related performance issues and allows for significantly more multi-tasking when compared to 8GB. As an added bonus, you won't have to worry about adding more anytime soon as it'll take games years to consistently start requiring more than 16GB of RAM.

    However, if you need more than 16GB, you can easily add more. The motherboard in this build has 4 slots for RAM and only 2 are being used by the current 2x 8GB pair.

    Power Supply (PSU): Thermaltake's 550W Smart BX1 is a good 80+ Bronze rated non-modular PSU with more than enough juice to power this build. Being that it's non-modular, it'll come with all of the cables permanently attached, it might not be ideal for achieving clean cable management, but you'll have everything you need regardless.

    There are many other options in terms of different power supplies. They come in one of 3 configurations, non-modular like this one, semi-modular where only some cables are permanently attached, and fully-modular where no cables are permanent.

    Storage: The WD Blue 500GB SSD this build uses is a good start. For a lot of people, it might be all they need. If you're one of the people who need more than 500GB of storage, I have good news.

    Adding more is really easy; all you have to do is grab another drive, plug in power + data and voila, you have more storage! This build can even support an M.2 NVMe SSD, if you wanted to try one of those out.


    If you're on a budget of $900, you're in luck, because that's the perfect amount to spend on a DIY gaming PC build. If you were to go to Best Buy and pick a prefab PC up for $900, you wouldn't get anything near the level of this beast. Just, don't forgot the price of Windows and any peripherals you might need on top of that.

    Operating System

    The operating system you pick should be based on your necessities, or how much extra cash you have lying around. If you need something that works right out of the box with very little tinkering required, Windows is what you want, but keep in mind that it'll cost around $100 to go this route.

    When it comes to getting access to the widest range of compatible programs, games, etc, Windows is your best bet. There are a few options available, but the one you'll want to consider first is Windows 10. It's the only OS that supports DirectX 12, and you're definitely going to want DX12 as it becomes used in more and more games.

    Windows Home

    For the more frugal or privacy concerned users, a Linux based O/S like Ubuntu might just do the trick. Linux has been dubbed the "most secure" operating system when it comes to spyware, etc, so if that is a concern, it's just another reason to grab a free copy of Ubuntu.

    When it comes down to actually installing your OS, you basically have 2 options. Either do it from a DVD/CD or create your own bootable flash drive loaded with an OS installer. In my opinion, the first option is a lot easier, but you'll need to grab the DVD drive I have listed above.


    If you don't already have the base peripherals like a monitor, keyboard, mouse, and some kind of audio, you're definitely going to not only want these things, but need them. Below we've featured an awesome product to represent each of the fundamental extras that you might need!

    Picking the best monitor for your usage is often very subjective, beyond the basic specs you should be looking for that is. With such a wide array of different designs and price points, it pays to do some research. That's why I put together this guide on how to pick the best monitor for gaming!

    Even more important than picking a good monitor is picking a good chair. If you can't get comfortable because you're using a bad chair, you're simply not going to enjoy your gaming sessions as much as you should be. To ensure you can get the most out of every session, I put together this in-depth buyers guide of all the best gaming chairs!

    Monitor for gaming

    Acer GN246HL

    24″, 1080p 144Hz, 1ms response time – Great for gaming! 

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    Corsair K55 RGB

    An awesome RGB keyboard using rubber dome keys. Lots of tactile feedback.

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    Razer Mamba Tournament Edition

    Chroma RGB lighting, awesome sensor accuracy, very comfortable to use.

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    Corsair HS50

    Easily one of the best headsets for under $50 

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    Logitech Z623 2.1 sound system

    2.1 channel, 200W RMS/400W peak. If you like bass, these are the speakers+sub you want.


    To connect to the internet, your most reliable and fastest option is always through a wired connection, but if you have no other choice other than a WiFi connection, then you're also going to need a WiFi adapter.

    If this is you, there are some important points you should consider before simply picking the cheapest adapter and calling it a day. First is the capabilities of your WiFi router/modem, does it support both 2.4GHz and 5GHz bands? Or just the 2.4GHz band? Determining this is your first step as it'll dictate which level of WiFi adapter will give you the best bang for your bucks.

    Generally speaking, a router on the "N" standard (like N900, etc) will only support the 2.4GHz band, but AC adapters (AC1200, AC1300, etc) will support both the 2.4GHz and 5GHz bands, often simultaneously. So, is your router N or AC?

    Once you've determined what kind of WiFi router you're working with, you can move onto picking out your adapter. Ideally, you want your router and adapter to be operating on the same "standard" (N/AC). To make it really easy, just pick an adapter with the same letters as your router/modem.

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    TP-LINK Archer T6E

    A good internally mounted (PCIe) AC1300 WiFi adapter. Make sure your build has enough room for an internally-mounted WiFi adapter.

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    TP-Link Archer T3U

    A reliable AC1300 USB WiFi adapter. Capable of operating on both the 2.4GHz and 5GHz bands.


    When everything is said and done, this machine is a beast and it will absolutely dominate any game you decide to play in 1080p 60-100fps+ (way more in most games) and it's also going to do well in 1440p @ 60fps. Whichever route you go, you can rest assured that this build has the power to handle it effectively.

    If you came here looking to build the best $900 gaming PC that will last you into the future of modern games, you've found the right build. This beast features quite a bit of upgrade potential and a lot of raw power, so what are you waiting for?

    If you have any questions, comments, concerns or otherwise, feel free to leave them in the comment section and I'll try to answer ASAP! 

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    About the Author


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    Hey there! I'm Branton, the founder and lead editor here at PC Game Haven. Since our launch in 2015, we've helped thousands upon thousands of gamers build their dream desktops, find the perfect peripherals, and more. Thanks for stopping by and feel free to get in tough!

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    Abdurrehman Farooq
    Abdurrehman Farooq
    October 11, 2021 9:52 am
    September 8, 2021 9:42 pm

    Just beware, graphics cards are really expensive right now, so your PC will cost way more than the price posted above. We are working on finding alternative graphics cards.

    August 18, 2021 12:46 am
    August 18, 2021 12:45 am

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    July 25, 2021 5:11 pm

    in switzerland it cost 1150 CHF

    July 11, 2021 9:38 pm

    Where can buy best <a rel=”noopener” href=”” title=”Mid-Range Gaming PC in UAE, 16GB RAM OC Gaming PC in UAE, Gaming PC in UAE”>Mid-Range Gaming PC in UAE, 16GB RAM OC Gaming PC in UAE, Gaming PC in UAE</a> Visit now

    March 23, 2021 4:10 am

    The gpu is at least 800 alone. I dont know if prices went up or what?

    March 25, 2021 6:26 am
    Reply to  Nathan

    They did. A lot of people say that bitcoin miners are buying thousands of graphics cards, which is driving the price up and the stock down.

    September 8, 2021 9:00 pm
    Reply to  Anonymous

    Yes they are, Graphic cards are really expensive right now, so the price of your PC will be higher than posted above.