On October 7 (U.S. time), Microsoft announced the opening of pre-orders
for the Surface Laptop Ultra and the compact Surface RTX Spark Dev Box.
Both are powered by NVIDIA RTX Spark and feature up to 128GB of unified memory.
They are designed for running and developing AI models
on a local Windows PC.
What Changes: Running Large AI Models on a Local PC
According to NVIDIA, RTX Spark is a platform combining
a Blackwell RTX GPU with a Grace CPU.
The CPU and GPU are connected at 600 GB/s
and share up to 128GB of unified memory.
The platform is coming to both laptops and compact desktops.
Microsoft says the Surface Laptop Ultra can run AI models
with more than 120 billion parameters locally.
For developers, it lists uses such as GitHub Copilot with local models,
prototyping AI agents, code review, and model testing.
The stated AI performance of up to one petaFLOP
is a theoretical figure using the FP4 format and sparsity.
In addition, the 128GB is the total system memory
shared dynamically between the CPU and GPU;
the maximum amount available to the GPU varies by configuration and workload
and is less than the full capacity.
A Portable Laptop and a Compact Desktop with a Development Environment
The Surface Laptop Ultra features a 15-inch touch display.
Microsoft says it uses a new cooling design with up to 2.5 times
the thermal capacity of previous Surface Laptop models.
It is designed for sustained, demanding creative work and AI processing.
The Surface RTX Spark Dev Box also features RTX Spark
and up to 128GB of unified memory.
It comes with development tools and runtimes preinstalled,
including Visual Studio Code, Git, GitHub CLI, GitHub Copilot,
WSL, Python, and Node,
ready for local inference, evaluation, and experimentation.
Pre-Orders Open, with Release Timing and Markets Varying by Product
According to Microsoft’s U.S. announcement, the Surface Laptop Ultra
starts at an MSRP of US$2,599.
Pre-orders opened on October 7, with availability planned from October 16.
Configurations and colors vary by market and retailer.
The Surface RTX Spark Dev Box is priced at US$5,999,
with pre-orders available exclusively on Microsoft.com in the U.S.
Shipping is scheduled to begin in November.
LC Signal’s Perspective: More Choice in Where to Experiment
NVIDIA says RTX Spark systems will be available not only from Microsoft
but also from Acer, ASUS, Dell, HP, Lenovo, MSI, and Gigabyte.
This brings local AI hardware in multiple forms,
from laptops to compact desktops designed for always-on operation.
Surface offers the portable Laptop Ultra
and the Dev Box with development tools as separate options.
Microsoft presents a picture of experimenting locally
and using cloud computing resources when needed.
If developers no longer need to send models to the cloud every time they test them,
it seems likely to become easier to choose where processing happens.
Key Sources
-
Microsoft official announcement, October 7, 2026:
Pre-order our most powerful Surface devices ever
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NVIDIA official announcement, October 7, 2026:
NVIDIA, Microsoft Kick Off a New Beginning for Windows PCs With RTX Spark and AI Agents
This article was prepared with AI assistance using publicly available information
as of October 8, 2026.
Announcement dates follow the dates shown on the official pages.
The October 7 (U.S. time) launch event corresponds to
the early hours of October 8 in Japan time.
Performance figures and supported model sizes are based on each company’s descriptions,
with the conditions for theoretical performance noted.
Prices are shown in U.S. dollars as stated in the U.S. announcement,
and release and shipping schedules are distinguished from the opening of pre-orders.
“LC Signal’s Perspective” reflects this publication’s interpretation
of the available information.