Nvidia RTX Spark Review: Windows on Arm Without Excuses

A review of Nvidia's RTX Spark platform in the HP OmniBook Ultra 16: a 20-core Arm CPU, Blackwell GPU with 6,144 CUDA cores and up to 128GB of unified LPDDR5X memory. The chip pulls up to 70W while a 99Wh battery delivers around 17 hours, though some anti-cheat games and legacy x86 tools still lag behind.

• 20-core Arm CPU, Blackwell GPU with 6,144 CUDA cores, up to 128GB unified memory
• Up to 70W draw with a 99Wh battery rated for about 17 hours
• Runs 70B–120B parameter models locally with no cloud or subscription
• Some anti-cheat titles and legacy x86 utilities still don't work