Best Gaming PC Build Under $400 (Updated June)

Are you in search of the best gaming PC under 400 for those on a budget? In this article, we share our top pick for the price point.

Best $400 Gaming PC Build

Component Images





CPU: AMD Ryzen 3 3200G

  • 3.6GHz

  • 4 cores

  • 4GHz Boost


  • 8GB

  • DDR4

  • 2800MHz


  • 240GB

  • SATA

  • 520/450MB/s read/write

PSU: Thermaltake SMART 600W

  • 600watts

  • 80 Plus Certified

  • 5 year warranty

MOBO: Asus TUF B450-Pro Gaming

  • ATX

  • AM4 socket

  • USB 3.1

Case: Corsair Carbide 100R

  • Mid tower

  • ATX case

  • Five fan mounts

CPU: AMD Ryzen 3 3200G.

AMD Ryzen 3 3200GThis compact and efficient CPU from AMD looks just like the rest of the Ryzen lineup in bright silver with the dark Ryzen logo on the front.

With the AMD Ryzen 3 3200G, you are going to get the best of both worlds and a heck of a deal at the price. You get a quad-core setup with four threads that has a base clock speed of 3.6GHz, which really blows previous generations out of the water.

This processor also comes fully unlocked and can be overclocked up to 4GHz when done correctly.

As this build is all about saving money, the 3200G has a built-in graphic processor to keep your budget trim. You gain access to the Radeon Vega 8 without the need to purchase a pricey GPU. It also has 6MB of Cache to keep things running smoothly.

The Ryzen 3 3200G is AM4 socket compatible so you won’t have any issues connecting it to the motherboard.

Lastly, you are going to get the Wraith Stealth stock cooler included with your purchase to ensure that CPU temperatures stay at a reasonable level and you get optimal gaming performance.


  • Inexpensive
  • Fantastic built-in graphics
  • Included cooling solution
  • Efficient


  • No multi-threading support


XPG Z1These RAM sticks from XPG comes with a peak at the top with great lines throughout and are available in three different color choices.

With the XPG Z1, you get two 8GB RAM sticks that have a clock speed of 3000MHz. This is going to allow you some room for overclocking and certainly be able to handle most modern games.

XPG Z1 uses DDR4 random access memory which has been proven to consume much less power than previous iterations.

The printed circuit board is also much stronger than before which gives you a stronger connection and even better heat dispersion. This is due to the 2-ounces of copper with 10 layers of the PCB that are aerodynamically designed.

If you are looking for a mixture of quality, performance, durability, and price, the XPG Z1 RAM kit is going to be great as your gaming RAM. It comes with a lifetime warranty from the manufacturers, so you can feel confident with your purchase.


  • Cheaper than other RAM kits with the same speed
  • Ryzen compatible
  • Good speed and performance
  • Lifetime warranty
  • Looks awesome


  • No temperature monitoring

Storage: ADATA SU365.

ADATA SU365As with all of the ADATA storage devices, this one comes in an all-black base color with the colorful ADATA sticker on the front.

With a little bit extra in this low-budget build you are able to get a respectable amount of storage space at 480GB. This solid-state drive is compact at 2.5-inches and super fast compared to older hard drives with reading and writing speeds of 520 and 450MB per second each.

It can reach these speeds thanks to the newest in 3D QLC and SLC Caching technologies.

This handy SSD from ADATA is designed with your convenience in mind as it runs extremely quiet and has ultra-low power consumption. You won’t have to worry about a jump in your electricity bill with this component.

The drive uses low-density parity-check as an error-correcting code, which will always guarantee the integrity of your data.

As an added bonus when you buy the ADATA SU365 you will gain access to their proprietary data and file management software to make yourself organized easier than ever.

This small SSD is a great addition to the gaming computer and installing your operating system onto it will ensure everything runs quick and smooth. Finding your own OS is probably the only downside when comparing to a prebuilt gaming PC.


  • Easy to open packaging
  • Read / write speeds operate close to as advertised
  • Price to performance ratio is great


  • Drive housing is flimsy and lacks sturdiness

Power Supply: Thermaltake SMART 600W.

Thermaltake SMART 600WThermaltake has decided no to do anything to fancy for the style of this PSU as it comes in black and white with a fan on the top portion.

With this power supply from Thermaltake, you can be sure that you will continuously receive 600 Watts of output at 40-degrees celsius. Under the average load, it will run at 80 percent efficiency and it is 80 plus certified.

This PSU means business when it comes to longevity and durability as it has been tested with 100 000 hours mean time before failure. As well, it has all of the typical protections such as overpower and over-voltage protection.

The Thermaltake SMART 600W can handle a ton of different sized loads thanks to the +12-volt rail built-in. When you pair everything with a five-year warranty from Thermaltake, and you have a winning power supply whichever way you look at it.


  • Extremely quiet operation
  • 80+ Gold rating
  • Overpower protection
  • Doesn’t overheat under load


  • Non modular PSU
  • Cables are stiff

Motherboard: Asus TUF B450-Pro Gaming.

Asus TUF B450-Pro GamingMotherboards are known to be functional over stylish, and this offering from Asus is just that with various shades of gray, black, and white.

The Asus TUF B450-Pro Gaming is going to be the perfect brain to plug all of your other budget components into. It is AMD AM4 socket ready out of the box, so the latest components will have no issues.

With onboard M.2 and NVMe PCIe RAID technologies, this mobo can transfer data at a lightning-fast 32 gigabits per second.

Where this motherboard truly shines is the audio and cooling capabilities. For the stereo line-out you get an impressive 108 decibel signal to noise ratio, and 103 decibels for line-in. It is also equipped with Fan Xpert 4 Core which is going to ensure a perfect balance of fan speed and noise at all times.

For those of you that want to power your build up, check out our gaming pc build under $5000.


  • Aura sync RGB lighting
  • AM4 socket
  • 2133MHz memory speed


  • Relatively expensive

Case: Corsair Carbide 100R.

Corsair Carbide 100RThis is a more down-to-earth looking computer case that could be used for any type of build, there is no distracting mesh, and it comes in three different color and design options featuring different levels of glass on the side.

You will get everything you need for connectivity with this case, as it even has two USB 3.0 ports in the front for your convenience. It also has four total drive bays that are designed to support newer SSD technology, and they can be installed without the need for tools.

To keep all of your precious components cool it has direct airflow to the graphics card, a built-in rear 120-millimeter fan, as well as four other slots to install more 120 millimeter fans if you so choose.

You are going to love this case on a smaller budget, as it will stand the test of time and protect your build.


  • Built in fan controller
  • Sound dampening
  • Looks amazing with the classic Obsidian
  • Strong and durable, whilst also lightweight


  • CPU access hole is small and not large enough for an ATX motherboard

How much should I spend on a gaming PC?

The answer is it depends on your needs. A cheap gaming PC will get you something that can run most games, be able to do some school work and browse social media. If you spend more money, you can get a dedicated GPU to play more demanding games and increase from medium settings to potentially max settings whilst getting better performance.

What are some future upgrades I can make or parts I can switch out for?

  • AMD Ryzen 5 3400g with RX Vega 11 graphics
  • Sapphire Radeon RX 570
  • Wraith Spire cooler and heat spreader
  • Corsair Vengeance LPX RAM
  • 240GB SSD to a 480GB SSD

Should I go with a budget gaming PC build?

A budget build is great if you want to play games that are not demanding. On a tight budget you’ll probably have an integrated graphics card which will limit you. You might also miss out on some PC components such as CPU coolers. When trying to keep on a budget, we suggest going for a Micro ATX motherboard, integrated GPU, a budget case with decent airflow and a small amount of SSD storage.

How do I find things for an affordable price?

Wait for holiday sales. Black Friday is a great time for buying anything in the gaming industry because its much cheaper than normal. Whether you want to pickup a mechanical keyboard, more RAM, dedicated graphics card, Cooler master case fan or anything else, wait for a holiday sale.

Console vs PC gaming

I often get asked should I spend my money on an Xbox One or be a PC gamer and I always go with PC. Gaming PCs are awesome because you can upgrade them with just a slight upgrade such as sound quality, or something major such a whole new MOBO. With an Xbox you can’t change anything. The other benefit is the wide range of games you can play, such as Rocket League and more on a PC.

When you eventually upgrade your PC into a beastly one, you can then run games with more performance and a better gaming experience. Everything can be swapped out between high end components, dedicated GPUs and even an aftermarket cooler. You can play and build exactly what you want which makes it a no brainer. The only downside is the extra money it costs.