Surface RTX Spark Dev Box combines NVIDIA Grace CPU cores, Blackwell RTX graphics, 128GB of unified memory, and support for models with up to 120 billion parameters in a compact desktop form factor. The machine features an aluminum enclosure covered with roughly 1,000 ventilation holes and delivers up to 1 petaflop of AI computing performance.
The desktop is built around NVIDIA’s RTX Spark Superchip platform. Inside are up to 20 Arm CPU cores from the Grace processor alongside a Blackwell RTX GPU comes with 6,144 CUDA cores. Microsoft lists performance of up to 1 petaflop for AI workloads.
The Surface RTX Spark Dev Box comes with 128GB of unified memory shared between the CPU and GPU. Both processors can access the same memory pool, removing the separation typically found in traditional desktop designs.
Microsoft states that the hardware can run models containing up to 120 billion parameters locally. Developers can perform model testing, fine-tuning, inference, and application development directly on the desktop.
The aluminum chassis functions as a heatsink and is covered with approximately 1,000 ventilation holes. Microsoft links the design to the platform’s “1,000 teraflops” branding while using the perforated enclosure to improve airflow and heat dissipation.

The compact desktop carries a practical selection of ports. Connectivity consists of two USB Type-C ports, two USB Type-A ports, HDMI output, Gigabit Ethernet, and a 3.5mm audio jack.
The desktop comes with a developer-focused edition of Windows 11 Pro. Dark Mode and Do Not Disturb are turned on out of the box, widgets are disabled, and PowerShell 7 is set as the default command-line environment.
Visual Studio Code, GitHub Copilot, Windows Subsystem for Linux 2, Git, Python, Node.js, CUDA support, GPU passthrough, and PowerShell 7 come preinstalled. The software package is ready for development work immediately after setup.

Microsoft lists power consumption at 100W. Despite its small footprint, the desktop combines workstation-class hardware with a cooling design integrated directly into the enclosure.
The Surface RTX Spark Dev Box is scheduled to arrive later this year. Pricing has not been announced. The newly published specifications provide the most detailed look so far at Microsoft’s compact desktop for local model development and software engineering.
Source: Microsoft



