NVIDIA Driver for RTX Spark Confirms N1X SKUs with 6,144 and 5,120 CUDA Cores

NVIDIA has released a developer preview of GeForce drivers for its RTX Spark PC platform, confirming the variants of the N1X chip and the SKU separation that will occur. In GeForce driver version 616.00, this marks the company's first driver package compiled for the Windows-on-Arm (WoA) platform. According to TechPowerUp's reporting citing Windows Latest — which extracted the installation file and examined the information file — there are two main RTX Spark N1X chip SKUs: one with 6,144 CUDA cores and another with 5,120 CUDA cores. Both are based on the Blackwell GPU microarchitecture and are paired with a 20-core Arm CPU and up to 128 GB of LPDDR5X memory, confirming the two-tier N1X strategy that previous driver leaks had suggested.

The developer preview driver represents a milestone for the RTX Spark software ecosystem. Version 616.00 is NVIDIA's first GeForce driver compiled natively for the Arm64 Windows architecture — not running through Microsoft's Prism x86 emulation layer — signaling that NVIDIA's consumer gaming driver stack, including Game Ready profiles, the DLSS framework, and the NVIDIA Control Panel, has been fully ported to the Arm ecosystem. NVIDIA is working with Microsoft to optimize Windows 11 for the platform, and developers now have access to the optimization techniques needed to get their AAA titles, productivity software, and other applications ported and running on NVIDIA's latest platform. TechPowerUp notes that this driver release builds on the CUDA Toolkit 13.4 Developer Preview for Windows on Arm that NVIDIA rolled out earlier this month, together forming the foundation of a native Arm64 development and runtime environment for RTX Spark ahead of its consumer launch this fall.

For Canadian consumers tracking RTX Spark's progress toward its Fall 2026 launch, the developer preview driver confirms that NVIDIA's two-tier N1X SKU strategy is on track, with the flagship 6,144-core variant targeting premium systems like the Surface Laptop Ultra and Lenovo Yoga Pro 9n, while the 5,120-core variant is expected to power more competitively priced RTX Spark laptops and compact desktops. Windows Latest had previously identified the same two GPU configurations through the driver's INF file on July 18, but TechPowerUp's reporting confirms that the driver is now being distributed as a developer preview — a step beyond the earlier leak — giving OEMs and software vendors a concrete software target to validate their RTX Spark hardware and applications against. Canadian early adopters should expect the driver to continue evolving through preview stages before Game Ready certification closer to the consumer launch, but the developer release removes a key uncertainty about RTX Spark's consumer software readiness and confirms that NVIDIA's full graphics driver stack will support the platform natively on day one.