By TechPowerUp
Publication Date: 2026-06-11 13:09:00
At the heart of RTX Spark is the NVIDIA N1X chip, which pairs a 20-core NVIDIA Grace Arm-based CPU with a Blackwell RTX GPU packing 6,144 CUDA cores and 5th Generation Tensor Cores with FP4 math precision, all connected via NVLink-C2C. The chip supports up to 128 GB of LPDDR5X unified memory in a 45-80 W power envelope (H-segment), and NVIDIA claims up to 1 petaFLOP/s of AI compute. A lower-end N1 variant with 5,120 CUDA cores is also planned. RTX Spark is not strictly a laptop platform either—NVIDIA also showed compact desktop mini PCs and the DGX Spark, targeting creators and developers who want the same silicon in a stationary form factor. And, looking at that power envelope, I wouldn’t be surprised if N1X (or a variant) eventually ends up in a handheld gaming console—it just makes a lot of sense. A chip like this could also compete with semi-custom AMD chips for the next Xbox or PlayStation.
The N1X Chip
We got a close look at two…

