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Builds / Nvidia GB10 (unified)

DGX Spark: Qwen3.8 Flash-Next NVFP4 on vLLM TP1, 29 tok/s prose (Tech2wild)

Last updated:

Source: github.com ↗More source: github.com ↗📏 How measured: reported by the original source; RigBase re-checked the numbers at that source
GPU(s)
Nvidia GB10 (unified)
VRAM / unified memory (GB)
128
CPU
Nvidia GB10 Grace (Arm)
Amazon · eBay (used) · Newegg
Motherboard
not stated
RAM
128 GB LPDDR5X unified per Spark (128 GB total)
PSU
not stated
Other
1 NVIDIA DGX Spark
Reported total cost
not stated
Power
not stated

Measured speed (generation tokens/sec)

ModelQuantEnginetok/sPrompt processing (tok/s)Details
Qwen3.8 Flash-NextNVFP4 + MTPvLLM TP1, 1 stream29not stated⚡ spec-decode (MTP)context: 262K📏 Single-stream prose decode as published in Tech2wild's recipe README (nvidia/Qwen3.8-Flash-Next-NVFP4).

Numbers by Tech2wild (tonyd2wild); nvidia/Qwen3.8-Flash-Next-NVFP4. RigBase read the GitHub README on 2026-10-28 and checked each figure against the text. RigBase did not re-run it. Speculative decoding (MTP/DFlash/DSpark) inflates predictable text; these rows prefer prose/code over counting peaks. Recipe license: Apache-2.0.

Source: https://github.com/tonyd2wild/Qwen3.8-Flash-Next-NVFP4-DGX-Spark
https://github.com/tonyd2wild/Qwen3.8-Flash-Next-NVFP4-DGX-Spark/blob/main/README.md

Blank fields = not stated in the source. We never estimate build data; GPU street prices above are separately sourced and dated.

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Quick answers: Can DGX Spark (GB10) run Qwen3.8 Flash-Next?