rtx-5090-benchmarks / reports /qwen3-coder-next-ud-q2-k-xl.md
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Benchmark Report: Qwen3-Coder-Next (UD-Q2_K_XL)

Date: 2026-06-04
Author: WITCHEER
Platform: NVIDIA GeForce RTX 5090 Benchmark Rig (capsule)


Model

Field Value
Model Qwen3-Coder-Next
Parameters 79.67 B (moe)
Quantization UD-Q2_K_XL
File size 24.92 GiB
Engine llama.cpp (CUDA 12.8 (patched))

Hardware

Component Spec
GPU NVIDIA GeForce RTX 5090
CPU AMD Ryzen 5 9600
RAM 64GB DDR5-5600
OS Ubuntu 26.04 LTS
CUDA 12.8 (patched)

Quality Benchmarks

All benchmarks use generative evaluation via llama-server chat completions. Multiple-choice tasks (MMLU, ARC, HellaSwag) use letter extraction instead of loglikelihood scoring -- results are internally consistent for model comparison but absolute scores may differ from logprob-based evaluations by 5-15%.

Summary

Benchmark Score Metric
MMLU 83.69% accuracy
ARC-Challenge 95.99% accuracy
HellaSwag 89.32% accuracy
HumanEval 93.29% pass@1
GSM8K 95.98% exact_match

MMLU Breakdown by Category

Category Score Correct / Total
Stem 84.07% 1,267 / 1,507
Humanities 83.38% 1,319 / 1,582
Social Sciences 90.62% 1,498 / 1,653
Other 78.62% 1,783 / 2,268

Sampled at 50% (seed 42)


Speed Benchmarks

Measured with llama-bench. All layers GPU-offloaded (-ngl 99).

Prompt Processing (tokens/s)

Context Length Speed +/-sigma
128 2,387 29.0
512 4,439 37.6
2048 4,432 21.0
4096 4,369 10.4
8192 4,275 21.3
16384 4,024 9.7

Generation (tokens/s)

Metric Speed +/-sigma
tg128 224.7 1.5

Methodology

Evaluation Framework

Custom generative evaluators built for this rig. All benchmarks run through llama-server's /v1/chat/completions endpoint.

  • Scoring: Generative evaluation (not loglikelihood)
  • Thinking: disabled
  • MCQ scoring: First valid letter extracted from response (A/B/C/D)
  • Sampling: 50% of dataset used
  • Temperature: 0 (deterministic)
  • Max tokens: 2,048
  • GPU offload: All layers (-ngl 99)

Benchmarked by WITCHEER on the RTX 5090 Benchmark Rig. Source: github.com/notwitcheer/llm-bench-rig/blob/main/reports/qwen3-coder-next-ud-q2-k-xl.md. Dataset: huggingface.co/datasets/witcheer/rtx-5090-benchmarks/blob/main/reports/qwen3-coder-next-ud-q2-k-xl.md.