Nemotron 3.5 Bolt

NVIDIA RTX Spark is a Windows PC platform built on a Blackwell RTX GPU and Grace CPU with up to 128 GB of unified memory. NVIDIA's developer post details DLSS 5 support starting with NBA 2K27, the Nemotron 3.5 Bolt E4B 4GB model for on-device AI characters, and updated RTX Kit, Nsight and Unreal Engine 5.8 tooling.