---
type: "Article"
title: "Qwen3.8-27B NVFP4 with SGLang on 1× DGX Spark (Weschera)"
description: "Qwen3.8-27B NVFP4 with SGLang on 1× DGX Spark (Weschera): recipe by Weschera with speed, condition and source for every number, weights and license."
resource: "https://www.contextstudios.ai/local-ai/weschera--qwen38-27b-nvfp4-dflash2-1x-dgx-spark"
language: "en"
generated:
  by: "process:contextstudios-md/1"
  at: "2026-10-02T21:56:34.819Z"
status: "stable"
---

# Qwen3.8-27B NVFP4 with SGLang on 1× DGX Spark (Weschera)

Qwen3.8-27B NVFP4 with SGLang on 1× DGX Spark (Weschera): 25.2 tok/s according to github.com (dataset as of Sep 29, 2026).

- Creator: [Weschera](https://www.contextstudios.ai/local-ai/creators/weschera.md)
- Engine: SGLang
- Quantization: NVFP4 (RadixArk) + BF16-Draft; quantized lm_head-Adapter (TP=1, 256-token selector chunks, FP32 top-k — r0b0tlab-Ansatz)
- Model family: Qwen3.8-27B
- Hardware: dgx-spark x1
- Context: 262144

## All numbers

- 25.2 tok/s (Mixed; Mixed, 1 request, mixed prompt set, with DFlash2 (per recipe)) — [source](https://github.com/Weschera/Qwen3.8-27B-NVFP4-DFlash2-DGX-Spark/blob/main/README.md)
- decode_tps: 25.17 (1 request) — [source](https://github.com/Weschera/Qwen3.8-27B-NVFP4-DFlash2-DGX-Spark/blob/main/README.md)
- decode_tps: 42.04 (1 request) — [source](https://github.com/Weschera/Qwen3.8-27B-NVFP4-DFlash2-DGX-Spark/blob/main/README.md)

## Weights

- [RadixArk/Qwen3.8-27B-NVFP4](https://huggingface.co/RadixArk/Qwen3.8-27B-NVFP4) (main, apache-2.0)
- [z-lab/Qwen3.8-27B-DFlash2](https://huggingface.co/z-lab/Qwen3.8-27B-DFlash2) (draft, apache-2.0)

[https://github.com/Weschera/Qwen3.8-27B-NVFP4-DFlash2-DGX-Spark](https://github.com/Weschera/Qwen3.8-27B-NVFP4-DFlash2-DGX-Spark)

## Related

- [Local AI on your hardware.](https://www.contextstudios.ai/local-ai.md)