Nvidia Enters PC Chip Market with RTX Spark

This fall, Nvidia will release the RTX Spark, its first consumer PC chip that integrates CPU, GPU, and AI accelerators on a single die. The chip is Arm-based, built on TSMC's 3nm process in partnership with MediaTek, and targets thin-and-light laptops and mini-PCs. Nvidia claims it's "the most efficient PC chip ever built," though it provided no benchmarks to support that during the announcement.

Specs: Up to 128GB Unified Memory, 6,144 GPU Cores

The flagship RTX Spark variant matches the GB10 chip found in Nvidia's DGX Spark "personal AI supercomputer." It includes:

  • 20 CPU cores (Arm Cortex-X and Cortex-A series, specific cores undisclosed)
  • 6,144 GPU cores (Nvidia RTX architecture, likely Blackwell-based)
  • 128GB LPDDR5X unified memory (shared between CPU and GPU)
  • TDP range: low single-digit watts idle to 80W peak

The chip can scale down to configurations with as little as 16GB RAM for lower price points. Nvidia says the GPU portion roughly matches an RTX 5070 mobile GPU, and the CPU performance is "competitive with anything else in the Windows space."

Performance Claims: 12K Video, 100fps Gaming, 120B-Parameter AI

Nvidia demonstrated the RTX Spark's capabilities:

  • Render a 90GB 3D scene
  • Edit 12K resolution video
  • Play Indiana Jones and the Great Circle at 100fps at 1440p
  • Run 120-billion-parameter AI agents locally

All in a 14mm thick laptop without a power cord. The unified memory allows hosting large AI models, and Nvidia's OpenShell runtime enables AI agents to take over keyboard and mouse for automation tasks.

Windows on Arm Ecosystem: Adobe, Riot Games, and More

Microsoft and Nvidia have been working with developers to bring native Arm support. At Microsoft Build, they'll showcase "new Windows security and containment primitives" for safe AI agent execution. Confirmed native Arm apps include:

  • Blender, DaVinci Resolve, Maxon Cinema4D, Maxon Redshift
  • Topaz Photo, CapCut, Cubase, Bitwig Studio, Affinity by Canva
  • Adobe Premiere and Photoshop with Nvidia-specific optimizations

Gaming support: Riot Games is bringing League of Legends and Valorant to Windows on Arm. Krafton is porting PUBG. Nvidia is working with Easy Anti-Cheat, BattlEye, and Denuvo developers. Epic's Fortnite already runs on Arm since November 2024.

Partner Laptops and Desktops

Eight laptops are confirmed for fall, including Microsoft's Surface Laptop Ultra, which Surface boss Andrew Hill calls "the most powerful thing we've ever made." Over 30 laptops and 10 desktops are in development from Acer, Asus, Dell, Gigabyte, HP, MSI, Lenovo, and others. Nvidia says the first wave targets premium price points, with lower-cost variants later.

Open Questions: Linux Support, Discrete GPU, Battery Life

Nvidia declined to comment on Linux driver support, stating focus is on Windows. The RTX Spark cannot be paired with discrete GPUs, limiting desktop expandability. Battery life claims: "much better than anything you've seen before on RTX laptops," with the chip scaling to low single-digit watts at idle. However, at 80W full load, it could drain a large battery in about an hour. Nvidia provided no specific benchmarks or comparisons to Intel, AMD, Apple, or Qualcomm chips.

Developer Implications

For developers, the RTX Spark enables local AI inference with 120B-parameter models without cloud costs. The unified memory simplifies programming (no separate GPU memory management). However, legacy x86 software requires emulation via Microsoft's Prism, which may impact performance. Developers targeting Windows on Arm should test their apps with Nvidia's chip when available.

What's Next

Nvidia will share more performance data closer to fall 2025 launch. Developers can start preparing by porting apps to Arm64 and leveraging Nvidia's CUDA and AI frameworks. The chip's success depends on real-world benchmarks and ecosystem maturity.