Qwen3.8-27B-NVFP4-GGUF

Qwen3.8-27B is a 27-billion-parameter dense vision-language model from the Qwen team, built on the Qwen3.5 architectural foundation. Its 64-layer hybrid architecture combines Gated DeltaNet linear attention with periodic Gated Attention layers and Multi-Token Prediction. It supports a native 262K-token context window, extendable to 1M via YaRN, image and video understanding, and configurable reasoning_effort (xhigh, medium, low). It excels in agentic coding and computer-use tasks, scoring 73.0 on Terminal-Bench 2.1, 61.7 on SWE-bench Pro, 84.3 on OSWorld-Verified, 81.9 on AndroidWorld, and 90.3 on LiveCodeBench v6, alongside 89.2 on GPQA-Diamond and 79.5 on IFBench. It supports Transformers, vLLM, SGLang, and TokenSpeed and is released under Apache-2.0.

MTP β€” Speculative Decoding: Yes

Multi-Token Prediction (MTP) GGUF is a specialized GGUF model file format extension that integrates speculative decoding directly into the model weights to significantly accelerate local inference. Unlike traditional speculative decoding which requires a separate, smaller "draft" model, MTP GGUF files include additional output heads within the main model architecture that predict multiple future tokens in a single forward pass.

Model Files

File Name Quant Type File Size File Link Description
Qwen3.8-27B-NVFP4.gguf NVFP4 28.2 GB Link NVFP4 quantization. Highly optimized for NVIDIA Blackwell hardware accelerators (e.g., RTX Pro 6000, RTX 50-series, B200, B300), offering native hardware-accelerated FP4 Tensor Core speeds and a strong balance of size and performance for this 27B parameter model.
Qwen3.8-27B-NVFP4.mmproj.gguf mmproj 931 MB Link Multimodal projection file. Used for vision/language models.

NVFP4 Test Run

Tested Qwen3.8-27B-NVFP4.gguf on an NVIDIA RTX PRO 6000 Blackwell Server Edition GPU with 96 GB of VRAM, using llama-cli with full GPU offloading and MTP speculative decoding.

Performance Metrics

Metric Value
Average Prompt Processing Speed 205.98 tokens/s
Average Generation Speed 96.50 tokens/s
Average Wall Time per Run 12.49 seconds
Total Wall Time (5 Runs) 62.5 seconds
Context Length 16,384 tokens
KV Cache (K) q8_0
GPU NVIDIA RTX PRO 6000 Blackwell Server Edition
GPU VRAM Capacity 96 GB
Peak GPU VRAM Usage 26.30 GiB
Peak GPU Utilization 97%
GPU Layers Offloaded 99 (-ngl 99)
Random Seed 42
Speculative Decoding MTP (draft_n_max=2)
Test Runs 5

Test Shots

Shot Test
Shot 1 C: Insert Node at End of Singly Linked List
Shot 2 Jogger and Train Passing Time
Shot 3 Two Pipes Filling a Tank
Shot 4 Students in Examination Rooms
Shot 5 Father and Son Ages

Run Inference

./build/bin/llama-cli \
  -m /path/to/models/Qwen3.8-27B-NVFP4.gguf \
  --spec-type draft-mtp \
  --spec-draft-n-max 2 \
  -ngl 99 \
  -c 16384 \
  --cache-type-k q8_0 \
  --seed 42 \
  -n 8192 \
  -st \
  -p "Your prompt here"

Performance results reflect this specific hardware and inference configuration. Actual throughput may vary depending on the prompt, model, software build, and runtime settings.


Snapshots (5)

download (1) download (2) download (3) download (4) download (5) download


Quantized using llama.cpp by prithivMLmods

llama.cpp

LLM inference in C/C++ β€” https://github.com/ggml-org/llama.cpp

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