System76 Introduces New Thelia Mira High Performance Desktop Series

System76 has refreshed its Thelio Mira desktop series with a focus on better thermals, easier serviceability, and a cleaner overall design, while it’s still all built in-house at the company’s facility in Denver. The new chassis mixes aluminium, steel, and a tempered glass front panel, with a vertical control bar consolidating the power button and front I/O into one clean strip. System76 uses steel fasteners throughout, and the panels are designed for quick access when you need to get inside for upgrades or maintenance. On the cooling side, System76 made improvements, the company claims up to 19% higher sustained CPU clock speeds and temperature drops of up to 13.5°C thanks to liquid cooling and revised airflow.

System76 also made changes to the specs as it is built around an ASRock X870 Pro RS WiFi motherboard. Processor options top out at the Ryzen 9 9950X or 9950X3D, memory goes up to 192 GB of DDR5, and storage can reach 28 TB spread across NVMe and SATA drives. As for the GPU, you can choose a single graphics card up to an RTX 5090 or Radeon RX 9070 XT over PCIe 5.0. Connectivity includes USB4, 2.5 GbE, and Wi-Fi 7, with a mix of front and rear USB ports. PSU requirements start at 750 W and go up to 1000 W for the beefier GPU configs. As with other System76 products, the Thelio Mira carries open-source firmware elements and is built with long-term usability in mind.

Alongside fully custom configurations, System76 offers two preconfigured options to get started. The Mira Premium pairs a Ryzen 9 9950X with 64 GB of DDR5-5600, a 2 TB PCIe 5.0 SSD, and an RTX 5070, priced at $4,299 (down from $4,352). The Mira Elite steps up to 96 GB of RAM, a 4 TB SSD, and swaps the NVIDIA card for an AMD Radeon RX 9070 XT, at $4,799 (down from $4,952).

You can see the complete tech specs and the service manual for the new Thelio Mira here as System76 advocates for the right to service, upgrade, and repair your own computer.