Microsoft opens preorders for the $5,999 Surface RTX Spark Dev Box, with 128GB of unified memory to run local models with 120B+ parameters, shipping in November
Microsoft first outlined the RTX Spark Dev Box in June, pairing Nvidia's Arm-based RTX Spark with 128GB of unified memory and a 100W thermal envelope for local AI work. Opening orders turns that June hardware announcement into a defined $5,999 product with a November delivery date.
The Dev Box arrives alongside the Surface Laptop Ultra, another RTX Spark-based Surface device announced for the fall. The two products split the same underlying AI hardware into a dedicated developer system and a portable PC.
First-order effects
Developers seeking to run models with more than 120 billion parameters locally can order a purpose-built Surface system rather than wait for the previously announced Dev Box to reach market.
Microsoft gains a $5,999 preorder channel for its highest-memory Surface AI hardware, with November shipments setting the first delivery window.
Second-order effects
Microsoft’s $5,999 Dev Box and the Surface Laptop Ultra starting at $2,599 create a clear product ladder around RTX Spark: dedicated local-model development is priced above a conventional AI-focused laptop.
Nvidia’s Arm-based RTX Spark becomes the common platform across Microsoft’s developer box and Surface Laptop Ultra, giving Microsoft an incentive to build a consistent Windows developer experience across both form factors.
Third-order effects
The pairing of 128GB unified memory with local execution of 120B-plus models makes memory capacity—not only accelerator branding—a central commercial specification for AI developer machines.
If Microsoft can sustain demand at this price point, Surface’s AI strategy shifts toward specialized local-model hardware alongside general-purpose PCs rather than treating AI features as a laptop add-on.
The trend: AI PC vendors are segmenting local-model computing into premium developer appliances and more conventional portable systems, with unified memory defining the upper end.
We are obviously in a very unique moment with agents. Was a delight to be invited by @Microsoft to their reveal today of several new agentic capabilities for Windows and to talk to @satyanadella and @JensenHuang . - MXC containers - a local sandbox for agentic execution. - Hybrid…
I will just leave this here 💚 Jensen said that software engineering has already changed - engineers are either building AI and improving models, or using AI to build things. That means the notion of what a personal computer provides needs to change. Builders will use local models…
Today marks a new chapter for Windows, as we bring unmetered intelligence to every desk and every home, and make every PC a place where agents can work securely on your behalf. Some highlights of what we announced: • MAI-Code-1.1 Flash: 137B parameter coding model w/ 256K context…
The next era of the PC is taking shape on Windows. ✨ Windows is becoming the home for hybrid intelligence. 🔐 MXC GA 🧠 Frontier coding models running locally ✨ GitHub Copilot HydraFusion 💻 llama.cpp + Windows ML ⚡ Surface Laptop Ultra + Dev Box preorders 🖥️ New RTX Spark PCs
I got to see how Microsoft built its MacBook Pro competitor. Deep inside Microsoft's labs the company zaps keyboards with electrostatic discharge guns, tries to break screens and trackpads, and uses robots to stress laptops in wild ways 👇https://www.theverge.com/ ...
Surface Laptop Ultra with 18-core CPU and 5,120-core GPU, 24GB RAM starts at $2,599. MacBook Pro with 18-core CPU and 20-core GPU, 24GB RAM, starts at $2,499.