# CUDA Ecosystem Drives RTX Spark Laptop Sales: Microsoft's 128GB Surface Laptop Ultra Sold Out in the US

> Microsoft's US website shows the 128GB Surface Laptop Ultra with a 1TB SSD is out of stock, while lower-tier models remain available. The $5,899.99 powerhouse is powered by NVIDIA's RTX Spark platform and its native CUDA support—a major selling point for AI developers and creators.

Source: https://techbeggar.com/blog/microsoft-surface-laptop-ultra-128gb-sold-out-cuda-rtx-spark
Published: Oct 11, 2026

### Microsoft's flagship Surface Laptop Ultra is already feeling the squeeze in the US.**

According to Microsoft's US online store, the **Surface Laptop Ultra** configuration with **128GB of unified memory and a 1TB SSD** is currently listed as out of stock. The high-end model is priced at  **$5,899.99** , while other lower-spec configurations remain available for purchase.

Tech media outlet *Wccftech* reports the rapid sellout could be due to limited early supply, though Microsoft hasn't released detailed sales data to confirm that theory. But there's a more compelling reason behind the demand— **the CUDA ecosystem** .

![Surface Laptop Ultra](https://winblogs.thesourcemediaassets.com/sites/43/2026/10/SURFACE-FY27-CONS-R-15-ID-Photo-2-1024x576.png "Surface Laptop Ultra")

For AI developers and content creators, a laptop like the Surface Laptop Ultra with massive memory and **native CUDA support** is a game-changer. Most AI frameworks, inference engines, and creative tools are built with CUDA in mind, meaning users can run their existing workflows out of the box without hunting for alternative solutions.

The Surface Laptop Ultra is built around NVIDIA's  **RTX Spark Superchip** , which combines an NVIDIA Grace CPU and a Blackwell RTX GPU on a single chip. The platform supports up to  **128GB of unified memory** , with the CPU and GPU dynamically sharing resources. This setup is designed for local AI development and inference, letting users run large language models locally—the top-tier config can even handle a 120-billion-parameter AI model.

Of course, there's competition. AMD's Ryzen AI Max 400 series offers up to  **192GB of unified memory** , with up to 160GB allocatable to the GPU. But the problem is that NVIDIA's CUDA ecosystem has become a fortress—few platforms can match NVIDIA when it comes to software compatibility. That's a huge deal for anyone who relies on CUDA-accelerated tools.

As of publication, Microsoft has not responded to inquiries about when the 128GB Surface Laptop Ultra will be restocked.

### Key Specs at a Glance


| Category        | Details                                                    |
| ----------------- | ------------------------------------------------------------ |
| **Model**       | Surface Laptop Ultra                                       |
| **Chip**        | NVIDIA RTX Spark Superchip (Grace CPU + Blackwell RTX GPU) |
| **Top Config**  | 20-core CPU, 6144 CUDA cores                               |
| **Memory**      | Up to 128GB unified memory                                 |
| **Storage**     | 1TB SSD (sold-out config)                                  |
| **Price (US)**  | $5,899.99 (128GB/1TB)                                      |
| **Key Feature** | Native CUDA support, local AI model execution              |
| **Competition** | AMD Ryzen AI Max 400 (up to 192GB unified memory)          |
| **Status**      | 128GB/1TB config out of stock in the US                    |