Target hardware: The initial 616.00 driver is aimed specifically at Microsoft's Surface RTX Dev Box, a developer reference device, not at retail consumer laptops .
CUDA Toolkit 13.4: The preview adds a native CUDA development package for Windows Arm64, letting developers compile CUDA applications directly on Arm systems . The release notes from Nvidia confirm support for compiler and build-system enablement for Windows on Arm .
Known issue: The release notes flag reduced CUDA transfer performance when using pageable memory, with a workaround recommending page-locked host memory .
Significance: The driver's appearance confirms Nvidia is actively preparing the software stack ahead of the fall 2026 consumer launch .
On July 18–19, 2026, a Cinebench 2026 result from a pre-release Microsoft Surface Laptop Ultra (engineering sample) was shared by TechPowerUp forums user Fouquin .
N1X specs in the leak: A 20-core Grace-architecture CPU (two 10-core clusters) paired with 48 streaming multiprocessors (6,144 CUDA cores), matching the desktop RTX 5070 in GPU core count . The chip features up to 128 GB of unified LPDDR5X memory .
Cinebench 2026 scores: 5,771 multi-core, 540 single-core, tested using Cinebench's 10-minute sustained throttling mode .
M3 Max comparison: The N1X's single-core performance is described as "on par" with the 14-core Apple M3 Max from 2023 . Earlier Geekbench 6 leaks from May–June 2026 also showed the N1X scoring 3,096 single-core / 18,837 multi-core, roughly matching the M3 Max's 3,124 / 18,920 .
Caveat: This is an engineering sample result; final retail performance may differ . Apple's newer M4 and M5 Max chips are significantly faster, and the N1X uses a 20-core design (vs. M3 Max's 14 cores) to achieve comparable scores, highlighting Apple's architectural efficiency .
GPU performance: In OpenCL tests, the N1X integrated GPU scored 46,361 points, outperforming the Apple M3 Max (approx. 37,500) and all current integrated GPUs, though the early sample ran at a conservative 1.05 GHz clock speed .
Nvidia unveiled RTX Spark at Computex 2026 on May 31, 2026 . Eight confirmed Windows laptops will launch this fall from six partners, with more than 30 total designs expected .
| Partner | Confirmed Models |
|---|---|
| Microsoft | Surface Laptop Ultra (flagship N1X model, 15-inch mini LED display, 2,000-nit peak brightness) |
| ASUS | ProArt P16 and ProArt P14 (creator-focused) |
| Dell | XPS 16 Creator Edition |
| HP | HP OmniBook X 14 and OmniBook Ultra 16 |
| Lenovo | Yoga Pro 9n |
| MSI | Prestige N16 Flip AI+ (2-in-1 convertible) |
Acer and Gigabyte have also confirmed they will ship RTX Spark devices in a later wave . Nvidia has stated these laptops will feature tandem OLED G-Sync displays and "all-day" battery life .
Nvidia has not published official MSRPs, but analysts (including Morgan Stanley, who surveyed vendors at Computex 2026) have provided estimates .
N1 (base) models: Expected to start around $1,799–$1,800. The N1 chip uses a 12-core Grace CPU and a GeForce RTX 5050-class GPU with up to 64 GB of unified memory .
N1X (flagship) models: Expected to start at or above $2,899. The N1X features a 20-core Grace CPU, a Blackwell GPU with 6,144 CUDA cores (RTX 5070-class), and up to 128 GB of unified LPDDR5X memory .
Source of estimates: Morgan Stanley analyst reports based on direct interviews with PC manufacturers at Computex 2026, and multiple tech outlets (PC Magazine, WCCFTech, VideoCardz, Notebookcheck) .
Uncertainty: These are analyst projections, not official Nvidia pricing. Actual retail prices will vary by OEM configuration, memory, and storage options . PCWorld's sources suggested a slightly wider range of $2,500–$2,900 for N1X and $2,000–$2,500 for N1 configurations .
The RTX Spark platform is in active developer enablement (driver 616.00, CUDA 13.4 preview). The N1X chip benchmarks at M3 Max-class CPU performance in Cinebench 2026, with an RTX 5070-class integrated GPU that leads all current integrated graphics. Six major OEMs (ASUS, Dell, HP, Lenovo, Microsoft, MSI) have confirmed fall 2026 laptops, with eight models at launch and 30+ in development. Analyst-estimated pricing is ~$1,799+ for N1 models and ~$2,899+ for N1X models, positioning them against premium machines like the MacBook Pro, though official MSRPs remain unannounced.