Lenovo Yoga 9n with RTX Spark review: local AI coding on a $4,000 laptop

Lenovo's 16-inch Yoga 9n 2-in-1 runs Nvidia's RTX Spark: a 20-core NX1 CPU, 64GB of unified memory, a 6144-core Blackwell GPU with CUDA and a 1TB SSD. In Llama-bench it processed prompts about 3x faster than a Mac Studio with M4 Max, but lagged in token generation, and an 80B Qwen3-Coder model ran with only a 32K context window.

• 20-core NX1, 64GB memory, 6144-core Blackwell CUDA GPU, 1TB SSD
• Prompt processing in Llama-bench about 3x faster than Mac Studio with M4 Max
• Token generation: Mac 1.5x faster on 8B and 2.5x faster on 32B models
• Local 80B Qwen3-Coder ran with only a 32K token context window