Five DGX Sparks Run Hot Serving vLLM — And It's the CPU, Not the GPU
EAccelerate_42 · x · 2026-08-18
An investigation into DGX Spark (GB10) units running hot while continuously serving 27B-class models via vLLM — including Qwen3.8-27B NVFP4 and DeepSeek-V4-Flash. With five 128GB units on a 200GbE fabric running around the clock, the author found the heat source is not the GPU but the GB-10 CPU, which runs hot even when idling.
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