The Best $750 Small Office Mini-ITX PC Build – November 2021

By Ari Altman | Published October 27, 2021 | Updated October 27, 2021

SilverStone ML09The Perfect Small Office PC!

Want to build the best home or small office PC possible with a budget of around $750? Then this is the guide for you! Our Small Office Mini-ITX PC Build is sleek, compact, powerful, quiet, and expandable. And of course, it’s affordable at just $750!

This Month’s Build, Featuring Intel!

For November 2021, this system features Intel’s Core i5-11400 processor. It offers 6 cores and 12 threads, with a boost speed of up to 4.3GHz. Plus, it has the very capable Intel UHD 730 Graphics built in, so you don’t need to worry about adding a video card! Also onboard are 16GB of DDR4-3200 RAM and a responsive 512GB NVMe solid-state drive. Giving this system its sleek profile is the ultra-compact SilverStone ML09 case, our favorite slim case of all time. Providing the power is a quiet 300W Bronze-rated power supply.

Despite this system’s tiny size (just 7 liters!), it can fit plenty of upgrades, including a low-profile video card (should you ever need to add a gaming-grade model) and up to four 2TB hard drives, bringing the total capacity to over 8TB including the SSD! Learn more about this build, which is truly one of our favorites, in our YouTube overview, and feel free to post any questions in the YT comments section.

Parting Thoughts

Any PC needs a good set of peripherals to get the most out of it, so definitely scroll down to the end of this guide to see our favorite accessories, or check out our dedicated Monitor Buyer’s Guide, Keyboard & Mouse Buyer’s Guide, and Headset & Speakers Buyer’s Guide. Throughout all of our guides, we provide direct links to Amazon, Newegg, or B&H for our readers in the US, and our Amazon links will auto-convert for our readers in the UK, Canada, and the EU, with regional substitutions made automatically as necessary. If you decide to purchase any of the products listed below, please use the links provided, which helps support continued development of this guide.

Required Components

  • CPU

    Intel Core i5-11400 @Newegg

    There’s plenty of competition in the mid-range CPU market, which is a great thing for you, the consumer! And Intel’s Core i5-11400 6-core, 12-thread CPU is the sweetspot, offering awesome multi-threaded capability plus plenty of single-threaded speed to power you through any task thanks to its modern Rocket Lake architecture. It also has built-in Intel UHD 730 graphics, which is priceless these days.
    The Guru’s Tip

    This CPU comes with a cooler, and it will work well in this build. If you'd like lower noise levels, go for the optional cooler we recommend later in this guide.

  • Motherboard

    MSI H510I PRO WiFi


    This low-cost mini-ITX board offers all the features you need for a compact build. That includes an M.2 SSD slot, dual RAM slots, six USB ports, and next-gen WiFi 6 and Bluetooth 5.1. Note that this is a socket LGA 1200 motherboard, so if it’s out of stock, make sure that you don’t pick an alternative model with a different CPU socket!

    The Guru’s Tip

    You'll be able to use this board's Displayport and HDMI 2.0 outputs to drive dual monitors with resolutions up to 4K, thanks to the advanced graphics built into the 11th-Gen Intel CPU!

  • Memory

    Crucial 2x8GB Ballistix DDR4-3200 White

    Thanks to great price on mainstream RAM, we can now squeeze a whole lot of performance and capacity into your system by going with a 16GB DDR4-3200 kit. It will help you make the most of your snazzy new system!
    The Guru’s Tip

    One of the advantages of Intel's 11th-Gen platform is support for much higher RAM speeds, which is why we go with this fast RAM kit in this build.

  • Solid-State Drive

    XPG SX8200 Pro 512GB

    There’s lots of competition in the SSD market, and right now, you simply can’t do better than this awesome deal from XPG on its SX8200 Pro 512GB NVMe drive, which uses the speedy PCIe 3.0 interface and TLC NAND to vastly outperform not just hard drives, but SATA-based SSDs as well! To install this drive, affix it in the motherboard’s M.2 slot using a jeweler’s-type screwdriver.
    The Guru’s Tip

    If you know you want more space right away, feel free to go for the 1TB version of this drive, listed on the same product page.

  • Case

    SilverStone ML09B

    Silverstone has done some serious engineering work here, and there’s simply nothing else like it on the market today. Despite its compact dimensions, the ML09 can fit a mini-ITX motherboard, a low-profile dual-slot video card, four 2.5″ drives, and an SFX power supply. It’s amazing!
    The Guru’s Tip

    To learn more about this case, don't miss our hands-on build video at the top of this page!

  • Power Supply

    SilverStone SX300

    This ultra-compact, Bronze-rated SFX PSU is a perfect fit for this build, offering just the right amount of output for an efficient build like this one.
    The Guru’s Tip

    SilverStone actually recommends fixed cables, rather than removable cables for the ML09 case, as the single cable output is easier to route around the case's 2.5" drive cage.

  • Operating System

    Windows 10 Home USB Flash Drive @Newegg

    Windows 10 is the most popular operating system in the world, and Microsoft continues to support users not only with regular security updates, but with major content releases every year. This USB version installs in under 5 minutes, meaning you can get right into using your system!
    The Guru’s Tip

    Windows 11 has launched, and will be rolled out as a free update to all users of Win10!

Optional Products

  • CPU Cooler

    Scythe Big Shuriken 3

    The excellent low-profile cooler will fit easily in this system while providing a huge upgrade in terms of noise and temperatures versus most other low-profile coolers. It’s also one of the very few high-performance low-profile coolers that does not obstruct the RAM slots.
    The Guru’s Tip

    This cooler measures 69mm tall, which means it will fit perfectly in the case, which has 70mm of clearance. You'll need to remove the pre-installed fan that comes mounted in the case, but the resulting cooling and noise levels will be far superior.

  • Hard Drive

    WD Blue 2TB 2.5″

    Want to add a bunch of storage to your system at low cost, and without taking up much space? No problem – just add this high-capacity 2TB hard drive to your build! Not only is it a good value, but it’s also very quiet and energy efficient.
    The Guru’s Tip

    This is only necessary if you will be storing a lot of media on your PC, like photos, music, video, or data files.

  • The Basic Wireless Keyboard/Mouse Combo

    Logitech MK270 Wireless Keyboard and Mouse Combo

    While you may have an old keyboard and mouse sitting in your desk, treat yourself to a new wireless setup from Logitech, the MK270!
    The Guru’s Tip

    This combo uses a single USB receiver to communicate with both devices, meaning you have plenty more USB ports left over!

  • The 24-inch Small Office Monitor

    Sceptre E248W-19203R


    This monitor offers a 24″ 1920 x 1080 panel, a 75Hz refresh rate for smooth scrolling, a slim bezel for sleek looks, as well as dual HDMI inputs and a VGA input. It even has built-in speakers!

    The Guru’s Tip

    We recommend connecting this monitor to your PC with an HDMI cable, which will provide both display and sound.

  • Webcam

    Logitech C925-e Webcam

    Need to do some teleconferencing? No problem, just pick up this high-quality USB webcam from Logitech!
    The Guru’s Tip

    If you don't have speakers already, you'll need to buy the ones below to use for video conferencing.

  • The Basic PC Speakers

    Creative Pebble 2.0

    Because desktop PCs, unlike laptops, don’t have internal speakers, we recommend you pick up Creative’s Pebble kit. Whether it’s music, You Tube videos, TV, or movies, Pebble will sound great.
    The Guru’s Tip

    Despite their name, these are definitely larger than a pebble!

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