Qwen3-Next

reported speed:

94.5 tokens/s generation

quant:

Q4_K_M (GGUF)

Reported by the source; GPU count, offloading and concurrent requests can change this figure. Check the full setup before comparing.

User reports Qwen3-Next-80B-A3B at 94.5 tok/s decode on an RTX 3090 with 16 GB RAM, using a patched llama.cpp that substitutes missing experts instead of waiting for SSD reads. Setup is llama.cpp with Q4_K_M, 1/4 of experts in VRAM, rest read from NVMe at ~5.7 GB/s, 16 threads, about 15.7 GB VRAM used. Stock llama.cpp gave 31.8 tok/s in the same 16 GB case; the patch also reached 108.4 tok/s with plenty of RAM and 89 tok/s reading every miss from SSD. Perplexity was 1.6% higher than stock, GSM8K lost 1.8 points, and greedy generation ran 64-74 tok/s. The 16 GB case was simulated by locking RAM on a bigger machine.

reported speed:

19.1 tokens/s generation · 130.0 tokens/s prompt processing

quant:

Q4_K_M (GGUF)

Reported by the source; GPU count, offloading and concurrent requests can change this figure. Check the full setup before comparing.

User reports Qwen3-Next-80B-A3B at 130 t/s prefill and 19.1 t/s generation on a CPU-only Lenovo ThinkStation P5 with Intel Xeon w5-2555X and 256 GB DDR5 ECC. Setup is llama.cpp built with GGML_NATIVE=ON, Q4_K_M quant, 32k context, mlocked into RAM, no GPU offload. The user also benchmarks Qwen3-Coder-30B-A3B at 166 t/s prefill and 33.7 t/s generation, gpt-oss-120b at 98 t/s prefill and 19.5 t/s generation, and Qwen3-235B-A22B at 24.8 t/s prefill and 5.6 t/s generation. An NVIDIA T1000 8GB was tested and found to slow prefill versus CPU-only, so it was removed from inference. The user notes that -ub tuning varies per model and that Q8 quant of Qwen3-Next-80B scored 59/61 on a coding suite versus 55-57 for Q4_K_M.

reported speed:

28.0 tokens/s generation

quant:

IQ2_XS (GGUF)

Reported by the source; GPU count, offloading and concurrent requests can change this figure. Check the full setup before comparing.

User reports Qwen3-Next Flash IQ2_XS at around 28 tok/s for short generation on a cluster of 4 BC-250 boards, dropping to 24 tok/s at 50k context with around 115 t/s prefill. Setup is llama.cpp with Vulkan and RPC over 1Gb Ethernet, 100k context, across 6 BC-250 ex-mining boards in an ASRock 4U12G case. The other two boards run Qwen3.6 35B Q4 at 60 tok/s with 100k context and 450 t/s prefill.

reported speed:

116.0 tokens/s generation · 6800-7950 tokens/s prompt processing

quant:

W4A16

Reported by the source; GPU count, offloading and concurrent requests can change this figure. Check the full setup before comparing.

User reports Qwen3-Next-80B at 116 t/s single-stream decode on a single NVIDIA CMP 170HX with 64 GB HBM2e, at a 150 W cap. Setup is vLLM 0.27.1 with W4A16 weights (40.9 GB), torch 2.13.0+cu130, CUDA 13.0, Ubuntu 26.04 LTS, on an AMD Ryzen Threadripper PRO 3945WX with 128 GB DDR4 ECC. Prefill over about 8.9k tokens measured 6800 to 7950 t/s; power draw 137 to 145 W. Aggregate throughput at 8 concurrent requests was 352 t/s, saturating at 4 slots. Also measured on the same card for context: Ornith-1.5-35B FP8 at 122.5 t/s and Qwen3.8-27B W4A16 with DFlash2 at 127 t/s single-stream.