NVIDIA unveils RTX Spark: Grace CPU and Blackwell RTX in one Windows chip

NVIDIA has published details of RTX Spark, a superchip that combines its Grace CPU and a Blackwell RTX GPU in a single package for Windows laptops and compact desktops. The company presents the chip as the basis of a new class of personal computers built around local AI agents, and is collecting sign-ups from customers who want to be notified when systems go on sale.

What is inside the chip

According to NVIDIA's product page, RTX Spark pairs a Blackwell RTX GPU with up to 6,144 CUDA cores and an up-to-20-core Grace CPU. The chip supports up to 128 GB of unified memory shared by both processors, and NVIDIA rates FP4 AI throughput at up to one petaflop. The company says CUDA runs natively on the platform, so developers can prototype and run models on the same machine.

The specifications list two laptop variants. The top configuration carries the 6,144-core GPU, the 20-core CPU and up to 128 GB of LPDDR5X memory; a second version has a 5,120-core GPU, an 18-core CPU and up to 64 GB of memory. Both are rated at 45–80 W and ship with Windows 11. The desktop version uses the full 6,144-core GPU and 20-core CPU with up to 128 GB of memory and a 140 W power envelope.

Agents, creation and gaming

NVIDIA frames the target workload as agents rather than applications: the page says the PC goes from tool to teammate, describing a machine that runs tasks, generates assets and writes code on request while the user sets the objective. The company also points to the size of the RTX software ecosystem — more than 1,000 accelerated apps and games — and to Studio tools for creative work.

For gaming, the chip supports fourth-generation ray tracing cores, fifth-generation Tensor Cores, DLSS 5, Reflex 2 with Frame Warp and G-SYNC, along with DirectX 12 Ultimate, PCIe Gen 5 and a ninth-generation encoder. NVIDIA also claims all-day battery life for the laptops, calling RTX Spark the most power-efficient RTX chip it has made.

Why it matters

RTX Spark is NVIDIA's attempt to move the Grace Blackwell design — familiar from its DGX Spark workstation — into mainstream Windows hardware, a market long dominated by Intel and AMD. The company has not published prices or a release date; the page only offers a notification list. Independent coverage of the launch has reported that the first RTX Spark laptops and desktops are expected in the autumn from PC makers including Asus, Dell, HP, Lenovo, Microsoft and MSI.