Nvidia RTX Spark N1X 18-Core
The Nvidia RTX Spark N1X 18-Core is a high-end SoC (System-on-a-Chip) for laptops introduced in 2026. It is Nvidia's first true notebook chip for Windows on ARM and is positioned as a direct response to Apple's M5 Pro and M5 Max. The chip combines a CPU based on the ARMv9 architecture with a full-fledged integrated RTX graphics unit primarily intended for AI tasks. Compared to the more powerful 20-core model, the 18-core model has one performance core and one efficiency core disabled. The maximum clock speed of the P-cores is also slightly reduced.
The RTX Spark was first used in premium multimedia laptops such as the Asus ProArt P16. The SoC uses a unified memory architecture (LPDDR6x), in which the CPU, GPU and NPU access a shared memory pool of up to 128 GB. This offers enormous advantages, especially for video editing and large AI models.
Architecture and Features
The RTX Spark's CPU consists of a total of 18 cores in two clusters and is supplied by MediaTek. The performance cluster uses ARM Cortex-X925 cores, which were introduced by ARM in 2024 and run at up to 3.9 GHz. Nine additional, smaller ARM Cortex-A725 cores running at up to 2.8 GHz handle efficiency tasks.
Graphics Unit (iGPU)
The real star of the SoC is the integrated NVIDIA Blackwell RTX GPU. It is based on the Blackwell notebook architecture and offers 5120 of the 6144 cores in the smaller model.Power Consumption (TDP)
Nvidia has the RTX Spark manufactured by TSMC using the modern 3 nm process (N2). Power consumption (TDP) is dynamic and depends heavily on the cooling system of the respective laptop. The cTDP (configurable TDP) range extends from 45 watts to 95 watts (PL2).
| Codename | Spark |
| Clock Rate | 1500 - 3900 MHz |
| Level 1 Cache | 2.5 MB |
| Level 2 Cache | 25 MB |
| Level 3 Cache | 24 MB |
| Number of Cores / Threads | 18 / 18 9 x 3.9 GHz ARM Cortex-X925 9 x 2.8 GHz ARM Cortex-A725 |
| Transistor Count | 70000 Million |
| Manufacturing Technology | 3 nm |
| Die Size | 382 mm2 |
| 64 Bit | 64 Bit support |
| Architecture | ARM |
| Announcement Date | 10/15/2026 |
| Product Link (external) | www.nvidia.com |
Benchmarks
- Average benchmark values* Smaller numbers mean a higher performance
- $2,199.99acer Predator Helios Neo 16 AI Gaming Laptop | Intel Core Ultra 9 Processor 275HX | NVIDIA GeForce RTX 5070 Ti | 16" WQXGA 240Hz G-SYNC | 16GB DDR5 | 1TB Gen 4 SSD | Killer Wi-Fi 6E | PHN16-73-92B8
- $4,199.99ASUS ROG Strix G18 (2025) Gaming Laptop, 18" 2.5K 240Hz 16:10 Display Laptop, NVIDIA GeForce RTX 5080, Intel Core Ultra 9 275HX, 64GB DDR5 RAM, 2TB M.2 PCIe SSD, WiFi 7, Win11 Pro - Eclipse Gray
- $7,699.00msi Titan 18" Gaming Laptop – Intel Core Ultra 9 290HX Plus, NVIDIA GeForce RTX 5090 24GB, 64GB DDR5 RAM, 2TB Gen5 SSD, 18" UHD+ 120Hz Mini LED Display, Windows 11 Pro, Core Black
- $2,179.00ASUS ROG Strix G18 18" Gaming Laptop | Intel Ultra 9 275HX (Up to 5.4 GHz) | NVIDIA GeForce RTX 5060 8GB GDDR7 | 32 GB DDR5 RAM | 1 TB SSD | 2.5K 240Hz/3ms Nebula Display | Wi-Fi 7 | Windows 11 Pro
- $1,699.99Acer Nitro V Gaming Laptop | Intel Core i9-13900H Processor | NVIDIA GeForce RTX 4060 Laptop GPU | 15.6" FHD IPS 144Hz Display | 16GB DDR5 | 512GB Gen 4 SSD | WiFi 6 | Backlit KB | ANV15-51-99DR
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