The Best $3,000 Ultra-Extreme Mini-ITX Gaming PC Build – June 2022

By Ari Altman | Published June 16, 2022 | Updated June 17, 2022

Lian Li Q58Go Big, but Build Small!

If you’re looking for a no-holds-barred extreme Mini-ITX Gaming PC Build in a sleek, compact chassis, this is the one for you! Our $3,000 Ultra-Extreme Mini-ITX Gaming PC Build might be dwarfed by standard towers, but it can easily keep up with them thanks to its truly extreme components. And amazingly, there is virtually no price premium for getting a system of this caliber down to a portable size, making this PC a pretty good value too.

This Month’s Build, Powered by Intel and Nvidia!

For June 2022, the $3,000 Ultra-Extreme Mini-ITX Gaming PC Build features the awesome Intel Core i7-12700K 12-core, 20-thread CPU, which lays down the law when it comes to gaming. When paired with the Z690I Unify motherboard from MSI and 32GB of DDR5-6000 RAM from G.Skill, it will seriously rip! This setup is supporting a beast of a GPU, Nvidia’s GeForce RTX 3080 Ti 12GB, a fully-upgraded version of the proven RTX 3080 10GB, with more VRAM, a wider memory bus, and more cores. Thanks to a recent price drop, it’s a fantastic deal for an ultra-high-end GPU!

Also on board is an amazingly-fast 2TB PCIe Gen 4-based solid-state drive and a 280mm liquid CPU cooler, which allows this mini-ITX rig to stay as cool as the big boys! Keeping the PC running is a 750W Platinum-rated power supply, and housing the system is the trend-setting Lian Li Q58 mini-ITX chassis, which comes in at 14.5 liters despite the capacity to hold all this gear, and more importantly, keep it all cool!

Parting Thoughts

You’ll find our recommendations for the best accessories for this build later in this guide. For all products, we provide links to Amazon or Newegg in the US, and our Amazon links will auto-convert for our readers in Canada, the UK, and parts of the EU, with regional substitutions made automatically where necessary. To support continued development of this guide, please use the affiliate links we provide in the guide.

The DIY Build

  • CPU

    Intel Core i7-12700K

    Intel reclaims the gaming lead with its 12th-Gen “Alder Lake” CPUs, and the 12700K is the CPU to get for extreme performance without going overboard on cost. It handily beats the previous-gen darlings, AMD’s Ryzen 7 5800X and Ryzen 9 5900X, and is nearly as fast as Intel’s top-end 12900K for a lot less money!
    The Guru’s Tip

    This hot processor needs a great cooler, which is what we suggest later in this guide!

  • Motherboard

    MSI Z690I Unify

    This mini-ITX board has what it takes to support the most powerful socket 1700 Intel-based systems.  It features a 10+1+1 phase VRM design, a 105-Amp power stage, and of course packs in a PCIe Gen 5 video card slot and triple PCIe Gen 4 M.2 drives, which is way ahead of the curve! Also onboard is 802.11ax (WiFi 6) wireless networking, Bluetooth, and 2.5Gb LAN.
    The Guru’s Tip

    We've gone with a DDR5 motherboard here to ensure that this system is on the cutting edge!

  • Video Card

    Gigabyte GeForce RTX 3080 Ti OC 12GB

    For extreme gaming, nothing less than the GeForce RTX 3080 Ti 12GB will do! This model offers up a sweet triple-slot, triple-fan cooler, and a nice factory overclock. It will rip though any game, beating everything in AMD’s stable while serving up Nvidia-only features like DLSS and dedicated Ray Tracing cores.
    The Guru’s Tip

    This card is 320mm long, which corresponds exactly to the 320mm limit of the case.

  • Memory

    G.SKILL 2x16GB Trident Z5 RGB DDR5-6000

    For the ultimate in speed, you must go with DDR5 RAM, but not just any DDR5 RAM, because you need high-frequency DDR5 to blow past DDR4 RAM performance. And that’s what you get with G.Skill’s Trident Z5 kit, running at DDR4-6000 with timings of 36-36-36-96 at 1.35V. This is the real deal when it comes to DDR5 performance!
    The Guru’s Tip

    We've selected a DDR5-compatible motherboard that will easily support the ultra-high frequency of this kit!

  • Solid-State Drive

    WD_Black SN850 2TB NVMe

    The fastest M.2 drive on the planet…. many drives compete for that title, but the mighty SN850 is right at the top. Powered by amazingly-fast NAND flash, and maxing out the PCIe Gen 4 bus, it’s the one you want!
    The Guru’s Tip

    While you don't really need a drive this fast for gaming, given the reasonable price, there's no reason not to go for the best!

  • Case

    Lian Li Q58X4 Black

    Lian Li has taken its design expertise and one-upped the entire Small Form Factor case industry with the Q58X4. Coming in at just 14.5 liters, it’s impossibly-small for its capacity. It uses a sandwich-style layout, putting the GPU behind the motherboard, while making room at the top of the case for a liquid cooler up to 280mm in size to exhaust all the system’s hot air. Plus it combines mesh and glass panels in a modular format to provide both plenty of air intake and a great view of your high-end components. And take note: the X4 edition of this case includes a high-quality PCIe Gen 4-capable riser cable to ensure full bandwidth to the latest video cards!
    The Guru’s Tip

    This case can fit video cards up to 320mm long. We have confirmed that the model recommended in this guide is within that limit.

  • Power Supply

    Corsair SF750

    Offering a tremendous 750W of power output and Platinum-rated efficiency in an ultra-compact package, Corsair’s SF750 sets the standard for ultra-premium SFX power supplies!
    The Guru’s Tip

    While you can use a larger PSU in this case, we recommend the smallest possible unit to provide maximum airflow and cable routing space. Don't worry, this model has more than enough power!

  • CPU Cooler

    MSI MAG CoreLiquid C280

    For a hot-running processor, you need serious cooling, and this 280mm liquid cooler from MSI has what it takes. Offering up tremendous performance, along with very classy looks, it’s the perfect match for this system.
    The Guru’s Tip

    This cooler will act as an exhaust for the entire system, as it will be mounted at the top of the chassis. Make sure to set it up with fans blowing up and out through the radiator! Also note that you have to be extremely careful selecting other 280mm coolers - the hoses must some out of the side of the pump, not the top, otherwise it won't fit in the chassis!

  • Operating System

    Windows 11 Home USB

    Windows 11 take everything people loved about Windows 10, and then takes it to 11! It adds significant under-the-hood changes to make it faster and more secure, and of course, the interface is sleek too!
    The Guru’s Tip

    Microsoft took its sweet time launching the retail version of W11, previously limiting the release to upgrades for existing W10 customers. But it's here now, and this is definitely the OS you want on a PC running Intel's latest hybrid CPU architecture!

Optional Products

  • The Typist's Gaming Keyboard

    Logitech G915 Wireless Mechanical Gaming Keyboard (Clicky)

    Best. Keyboard. Ever. And the only wireless mechanical keyboard with full RGB lighting on the market. This thing is a dream come true, so sleek, so responsive. Honestly, it’s in a class of its own.
    The Guru’s Tip

    This is the keyboard we've been using every day since it was released, and we'll never give it up!

  • The Ultimate Wireless Gaming Mouse

    Logitech G502 Lightspeed Wireless

    Logitech designed the G502 Lightspeed Wireless to be the ultimate technological tour de force in the gaming mouse industry. Featuring a mesmerizing 25K Hero sensor, tunable weights, RGB lighting, and the best wireless connectivity, it is impossible to beat. And you can even upgrade it to ultra-elite status with the optional PowerPlay charging mat, which allows you to use it forever without stopping to charge thanks to the exclusive wireless charging capability!
    The Guru’s Tip

    We've been using this mouse since release, and it's been absolutely stellar the entire time!

  • The Deluxe PC Headset

    Corsair Virtuoso Wireless Headset

    Combining ultra-high-end performance with incredible comfort, this wireless headset from Corsair is the ideal all-day companion for listening to the latest market news. This headset also has an audiophile-grade microphone, perfect for teleconferencing. Free free to check out our full review right here!
    The Guru’s Tip

    This headset is our daily driver, and it's never let us down!

  • The 32" 4K 144Hz Gamer's Dream Monitor

    Gigabyte M32U

    It took seemingly forever for the elusive 32″ 4K 144Hz panels that gamers had dreamed of for years to finally hit the market, and surprisingly Gigabyte was first out of the gate with one widely available at retail. Known for its high-end video cards and motherboards, Gigabyte has quickly made a name for itself in the gaming monitor market, and the M32U simply astounds with its features. Get a load of these specs: a 31.5″ 3840 x 2160 4K IPS panel, 144Hz refresh rate, 1ms (GTG) response time, FreeSync, 10-bit color,  90% DCI-P3  and 123% sRGB color space, and VESA DisplayHDR 400. It even has a built-in KVM switch, allowing you to use it on multiple systems with the push of a button!
    The Guru’s Tip

    If you want a monitor to show off the power of your new ultra-extreme PC, this is the one!

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