System76 Launches New COSMIC-Powered Thelio Mira High-Performance Linux PC

posted by Marius Nestor on Mar 17, 2026,
updated Apr 24, 2026

Powered by the latest Pop!_OS Linux 24.04 LTS operating system with the Rust-based COSMIC desktop environment, the new Thelio Mira PC introduces a new design that conveniently places front ports alongside a high-quality tempered glass facade.

The new generation Thelio Mira can be configured with up to an AMD Ryzen 9 9950X3D (Granite Ridge) CPU with 16 cores, 32 threads, and up to 5.7 GHz boost speeds, up to 32 GB NVIDIA Geforce RTX 5090 or AMD Radeon RX 9070 XT GPUs, up to 192 GB DDR5 3600 MHz, and up to 28 TB of SSD storage.

Read on

MakeUseOf:

• I replaced GNOME with the new COSMIC, and it feels like the future of Linux

  GNOME has been my default Ubuntu desktop for years. It’s stable, polished, and widely supported. If you install Ubuntu, GNOME is simply part of the deal. It works well enough that most people never feel the need to replace it. But lately, I keep hearing whispers about something new: the COSMIC desktop. Originally developed by System76 for Pop!_OS, COSMIC has evolved into a completely new desktop environment built from scratch. Not a theme, not a fork, but an entirely new stack, largely written in Rust and designed around modern Linux workflows. Naturally, my curiosity won.

How-To Geek:

• The System76 Thelio Mira is the new Linux desktop workstation to beat

  System76 builds desktops and laptops designed for desktop Linux, and now the company has revealed its latest high-performance desktop. The new Thelio Mira has a redesigned case, AMD Ryzen 9 processors, and the usual best-in-class Linux support.

  Even though the update case design might be more sleek and refined, it now just looks like every other desktop PC—it reminds me the most of HP’s typical PC tower design. That might be a selling point for System76’s target market, but it is a bit disappointing to see the distinct hardware design fade away. It's fully manufactured in the United States, though.

FOSS Force:

• System76 Redesigns Thelio Mira as a Liquid‑Cooled Linux Desktop - FOSS Force

  System76, the “made in the USA” computer company out of Denver that specializes in hardware pre-installed with Linux, has announced a complete redesign of Thelio Mira. It’s now positioned as the “professional” desktop sitting above Thelio Prime, topping its Thelio desktop line, just below it’s Thelio workstations.

  If you’re a long time System76 user and this hierarchy seems a little wonky to you, let me explain. Gone are the days when Thelio was a line that produced three distinct versions — Thelio, Thelio Major, and Thelio Massive — mostly classified by cabinet size and how much computing horsepower could be put inside those cabinets.

  These days there are two categories — desktop and workstation — with two versions of Thelio in the desktop line and three separate Thelio workstations. Prime is the lowest priced Thelio desktop (the lowest priced overall, actually), with a base price of $1,499. The baseline for Mira is $1,699, with the baseline tech specs for the two lines being so close that you might think that other than Mira’s larger case, they’re the same.

Linux Magazine:

• System76 Retools Thelio Desktop » Linux Magazine

  System76, the company behind Pop!_OS and the COSMIC desktop, has released a new version of its popular Thelio desktop designed for high performance under heavy workloads.

  This beautiful new desktop computer isn't just form over function, as the new design focuses on clarity, durability, and purpose. Yes, it's one of the most striking desktop PCs you'll find on the market, but it also has plenty of power under the hood. The new Thelio Mira can be configured with up to AMD Ryzen 9 9950X CPU (16 Cores, up to 5.7 GHz boost speeds), 192GB DDR5 memory, 28TB of storage, and NVIDIA RTX 5090 graphics.

  There's also liquid cooling to enable the CPU to maintain peak performance under extended workloads. This new design should help make the system faster and cooler during compute-intensive tasks.

  There are also some really important new additions that should help make the Thelio a long-lasting machine. There are quick-access magnetic panels for gaining access to the interior (which is a nice improvement over the previous case), a bottom dust filter for easy cleaning to help maintain airflow, and front-facing ports for easy connectivity.

Neowin:

• System76 has launched Thelio Mira desktop and Thelio Major workstation based on Linux - Neowin

  The Thelio Mira is built for professionals who need a performance-oriented, reliable, and repairable device that can be used in any kind of workstation environment. It can be configured with an AMD Ryzen 9 9950X3D processor, 192GB of DDR5 memory, 28TB of storage, and NVIDIA RTX 5090 graphics. Majorly, the desktop is 19% faster, and operating temperatures are reduced by 13.5 degrees Celsius with an improved thermal design, compared to its predecessors.

  While the developers seeking to max out the system's performance can get their hands on the Thelio Major workstation, which is configurable up to 64-core AMD Threadripper 9980X processors, 256GB DDR5 ECC memory, NVIDIA RTX Pro 6000 Blackwell graphics, and 40TB of storage. For an output of better thermal performance with smooth and faster operations, the chassis of the workstation has been reduced by 13% compared to its previous versions. Key performance improvements over the previous generation include...