Qwen3.6-27B-MTP TQ3_4S — GGUF

TQ3_4S quant of Qwen/Qwen3.6-27B (Apache 2.0), produced via turbo-tan's llama.cpp-tq3 CUDA fork. Benchmarked on a Blackwell RTX 5060 Ti (16 GB). Mean AEON score: 0.525 (120 scored / 150 cases, 2048 budget).

File

NOT a stock llama.cpp quant

TQ3_4S (TurboQuant 3-bit 4-state) is a custom weight format unique to turbo-tan/llama.cpp-tq3. Stock llama.cpp and nixpkgs llama-cpp will exit with unknown quantization at load time. Use the llama-server/llama-cli from the tq3 fork.

Scope of these benchmarks — read this first

These numbers are a light baseline, not a thorough TQ3 evaluation. The mesh's bench framework is built for production agent workload regression-detection on the local stack, not for the kind of multi-axis sweep that upstream quant maintainers typically publish. Specifically:

• Harness scope is bounded. The numbers below come from the mesh's Aeon-Bench-Pod (self-reported mode, 150-case full suite, text-only, no agentic harness). That's a regression suite, not a quality benchmark.
• Sample sizes are small. 150 cases on a single GPU, single rep. None are powered for statistical significance.
• No perplexity / wikitext / MMLU / GSM8K. The mesh's stack isn't a quality benchmark — those are upstream's territory.
• Single GPU class (Blackwell 16 GB). All measurements are on an NVIDIA RTX 5060 Ti 16 GB (CUDA 13.2, turbo-tan/llama.cpp-tq3). No RDNA4, no multi-GPU, no Vulkan. Cross-hardware generalization is NOT implied.
• No human eval. "0.525 mean on the AEON suite" is not a quality verdict on this specific quant.
• 30 prose cases unscored — no frontier judge endpoint configured, so the prose category (30/150 cases) is excluded from the mean.

What this IS good for: a quick signal that the quant (a) loads, (b) runs at sane throughput, (c) produces coherent output across math, instruction, reasoning, and coding. What this is NOT good for: claiming "this is the best quant of this model," reproducing academic benchmark results, or substituting for upstream's validation work.

For a rigorous view, see Qwen/Qwen3.6-27B (parent model) and turbo-tan/llama.cpp-tq3 (quantizer). Raw bench reports are attached as BENCH-*.md files in this repo.

What we measured

AEON v3 — 150 cases (120 scored)

Benchmarked on Blackwell RTX 5060 Ti 16 GB, full suite.

Profile: Strong on coding (0.933), weak on instruction-following (0.333) and reasoning (0.367). Typical Qwen3.6-TQ3 profile — excels at structured code tasks, struggles on instruction-heavy and frontier-difficulty cases.

Companion: ROCmFP4_FAST (RDNA4)

The companion ROCmFP4_FAST quant for AMD RDNA4 scores 0.558 on the same suite. Cross-format parity is within ~3pp on most categories; the AMD arm benefits from a higher coding score but the overall profile is similar.

Quick start

# Build turbo-tan's tq3 fork
git clone https://github.com/turbo-tan/llama.cpp-tq3
cd llama.cpp-tq3
mkdir build && cd build
cmake .. -DGGML_CUDA=ON -DCUDA_DOCKER_ARCH=sm_120
make -j$(nproc)

# Serve with production-equivalent flags
llama-server \
  -m Qwen3.6-27B-MTP-TQ3_4S.gguf \
  --host 0.0.0.0 --port 8081 \
  -ngl 99 -c 131072 -t 12 \
  -ctk q4_0 -ctv q4_0 \
  -np 1 --batch-size 512 --ubatch-size 128 \
  --jinja --metrics -rea off

Reproduce the quant

# Requires the tq3 fork and the BF16 source GGUF
llama-quantize --allow-requantize Qwen3.6-27B-BF16.gguf \
  Qwen3.6-27B-MTP-TQ3_4S.gguf TQ3_4S

Files in this repo

What's NOT in this repo (caveats)

• Stock llama.cpp will not load this file. TQ3_4S is a custom weight format unique to turbo-tan/llama.cpp-tq3.
• No AMD GPU bench. All measurements are RTX 5060 Ti (CUDA). The companion ROCmFP4_FAST quant for RDNA4 is in a separate repo.
• No quality benchmark (perplexity, MMLU, GSM8K). The custom 3-bit quant works on the mesh's regression tests; whether it's "the best TQ3 quant" needs upstream validation.
• No MTP / speculative-decode bench. MTP heads are present in the source model but were not benched on this quant.

Provenance

• Source model: Qwen/Qwen3.6-27B — Apache 2.0
• Quantizer: turbo-tan/llama.cpp-tq3
• Quantizer license: MIT
• Build hardware: NVIDIA RTX 5060 Ti 16 GB (Blackwell), CUDA 13.2, NixOS 25.11
• Bench harness: Aeon-Bench-Pod v1 (self-reported mode)

License

• Qwen/Qwen3.6-27B is Apache 2.0.
• turbo-tan/llama.cpp-tq3 is MIT.
• The GGUF in this repo is a derivative of the Apache 2.0-licensed parent, produced with the MIT-licensed quantizer. The Apache 2.0 license is preserved.