A First Look at Microsoft's Most Powerful Surface Prototype Laptop: NVIDIA RTX Spark Computing Platform, 24GB Unified Memory - IT Home

A leaked Microsoft Surface Laptop Ultra prototype was spotted with Nvidia’s N1x Arm chip, a Blackwell GPU, 24GB unified memory, and a 512GB SSD.

A TechPowerUp forum user said newer preview driver 616.00 offered little benefit over Game Ready 591.33, with ongoing GPU clock swings and stuttering.

Early benchmark results in Cinebench 2024 and 2026 suggest the device is still far from polished.

The findings give an early glimpse at Microsoft’s high-end Surface hardware on Nvidia’s new RTX Spark platform and its Windows-on-Arm potential.