System76/Configurable
Thelio Mira Custom
US · S76-BASE-1638
Configurable desktop · Advertised base configuration
Configurable modelS76-BASE-1638
The hardware
Full Specifications
Configuration choices and fixed specifications. Upgrade limits do not guarantee an orderable choice.
Performance — CPU / GPU▾
Processor options
- 5.4 GHz Ryzen 5 9600X (6 Cores - 12 Threads)
- 5.5 GHz Ryzen 7 9700X (8 Cores - 16 Threads)
- 5.2 GHz Ryzen 7 9800X3D (8 Cores - 16 Threads)
- 5.6 GHz Ryzen 9 9900X (12 Cores - 24 Threads)
- 5.7 GHz Ryzen 9 9950X (16 Cores - 32 Threads)
- 5.7 GHz Ryzen 9 9950X3D (16 Cores - 32 Threads)
- 5.6 GHz Ryzen 9 9950X3D2 (16 Cores - 32 Threads)
Manufacturer-listed choices for this model. Selected base: 5.4 GHz Ryzen 5 9600X (6 Cores - 12 Threads). Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Graphics options
- AMD Radeon Graphics
- 6 GB NVIDIA Geforce RTX 3050
- 8 GB NVIDIA Geforce RTX 5050
- 8 GB NVIDIA Geforce RTX 5060
- 16 GB NVIDIA Geforce RTX 5060 Ti
- 16 GB AMD Radeon RX 9070 XT
- 16 GB NVIDIA Geforce RTX 5070 Ti
- 16 GB NVIDIA Geforce RTX 5080 with 1000W PSU
- 32 GB NVIDIA Geforce RTX 5090 with 1000W PSU
Manufacturer-listed choices for this model. Selected base: AMD Radeon Graphics. Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Memory & Storage▾
| Installed RAM | 16 GBSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
|---|
Memory options
- 16 GB DDR5 5600 MHz (1x16)
- 32 GB DDR5 5600 MHz (2x16)
- 48 GB DDR5 5600 MHz (2x24)
- 64 GB DDR5 5600 MHz (2x32)
- 96 GB DDR5 5600MHz (2x48)
- 128 GB DDR5 3600 MHz (4x32)
- 192 GB DDR5 3600 MHz (4x48)
Manufacturer-listed choices for this model. Selected base: 16 GB DDR5 5600 MHz (1x16). Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗OS Drive options
- 500 GB PCIe4 M.2 SSD (Up to 5,000MB/s Read, 3,000MB/s Write)
- 1 TB PCIe5 M.2 SSD (Up to 11,700MB/s Read, 9,500MB/s Write)
- 2 TB PCIe5 M.2 SSD (Up to 12,400MB/s Read, 11,800MB/s Write)
- 4 TB PCIe5 M.2 SSD (Up to 14,100MB/s Read, 12,600MB/s Write)
Manufacturer-listed choices for this model. Selected base: 500 GB PCIe4 M.2 SSD (Up to 5,000MB/s Read, 3,000MB/s Write). Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Additional M.2 NVMe Storage options
- No Additional M.2 NVMe Storage
- 1 TB PCIe4 M.2 SSD (Up to 7,000MB/s Read, 6,000MB/s Write)
- 2 TB PCIe4 M.2 SSD (Up to7,000MB/s Read, 7,000MB/s Write)
- 4 TB PCIe4 M.2 SSD (Up to 6,000MB/s Read, 5,000MB/s Write)
- 8 TB PCIe4 M.2 SSD (Up to 7,100MB/s Read, 6,000MB/s Write)
Manufacturer-listed choices for this model. Selected base: No Additional M.2 NVMe Storage. Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Additional 2.5" Storage options
- No Additional SATA 2.5" Storage
- 8 TB SATA 2.5" SSD (1x 8TB) (560MB/s Read, 530MB/s Write)
- 16 TB SATA 2.5" SSD (4x 4TB) + Additional 2.5" Drive Cage
- 16 TB SATA 2.5" SSD (2x 8TB) (560MB/s Read, 530MB/s Write)
Manufacturer-listed choices for this model. Selected base: No Additional SATA 2.5" Storage. Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Display▾
| Screen technology | Not applicable |
|---|---|
| Size | Not applicableSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
| Resolution | Not applicableSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
| Refresh rate | Not applicableSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
Battery & Power▾
| Battery capacity | UnpublishedSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
|---|---|
| Power supply | 750 Watt SFX 80+ Gold Certified (1000 Watt SFX 80+ Gold with RTX 5080 and 5090 GPU)Source & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
Connectivity▾
| Ports | Video Ports: Integrated graphics : 1 x HDMI 2.1, 2 x USB4 USB-C Other options are dependent on graphics selection. Most include 3 x DisplayPort, 1 x HDMI port. · Rear Ports: 1 x HDMI Port, 2 x USB4 Type-C Port, 1 x USB 3.2 Gen 2 Type-A port (red), 3 x USB 3.2 Gen1 Type-A Ports, 4 x USB 2.0 Ports, 1 x RJ-45 LAN Port, 1 x BIOS Q-Flash ButtonSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
|---|
WiFi and Bluetooth options
- Built-in WiFi 7 + Bluetooth 5.4
- Remove WiFi + Bluetooth Hardware
Manufacturer-listed choices for this model. Selected base: Built-in WiFi 7 + Bluetooth 5.4. Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Build & Physical▾
| Weight | UnpublishedSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
|---|---|
| Dimensions | Height × Width × Depths · 17.31" × 9.96" × 15.12" (440mm H × 254mm W × 384mm D)Source & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 System76 exact official product and manufacturer-selected base controls |
Software & Bundle▾
| Included bundle | Unpublished |
|---|
Operating System options
- Pop!_OS 24.04 LTS with the COSMIC Desktop Environment
- Ubuntu 24.04 LTS
- Ubuntu 26.04 LTS
Manufacturer-listed choices for this model. Selected base: Pop!_OS 24.04 LTS with the COSMIC Desktop Environment. Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Warranty options
- 1 Year Limited Parts and Labor Warranty
- 2 Year Limited Parts and Labor Warranty
- 3 Year Limited Parts and Labor Warranty
Manufacturer-listed choices for this model. Selected base: 1 Year Limited Parts and Labor Warranty. Compatibility and availability depend on other selections; confirm the final order with System76.
Manufacturer options ↗Motherboard & Memory Expansion▾
| Motherboard model | UnpublishedSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 Unpublished: no unambiguous exact-device manufacturer specification |
|---|---|
| Total RAM slots | UnpublishedSource & observationView specification source ↗Observed 2026-10-02T18:47:09.488856+00:00 Unpublished: no unambiguous exact-device manufacturer specification |
Independent testing
No published tests or reviewsBenchmarks & Reviews
No test results available (for now). A buying verdict is unavailable for this exact configuration.
Compare Configurations
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