Qwen 3.8 Flash-Next is a 180B-parameter mixture-of-experts model (6B active per token). Smaller quantizations need less memory and run faster, at some cost in quality. Below is the expected speed on each piece of hardware at the best quantization that fits.
| Hardware | Quantization | Memory | Generation | First token |
|---|---|---|---|---|
| H200 141GB (cloud) | Q4_K_M | Fits | 525 tok/s | 0.3 s |
| NVIDIA RTX PRO 6000 96GB | GSQ-RCO-IQ3_S | Fits | 280 tok/s | 0.3 s |
| Mac Studio M5 Ultra 256GB | Q4_K_M | Fits | 161 tok/s | 0.3 s |
| Mac Studio M5 Ultra 512GB | Q4_K_M | Fits | 145 tok/s | 0.3 s |
| Mac Studio M3 Ultra 512GB | Q4_K_M | Fits | 110 tok/s | 0.3 s |
| MacBook Pro M5 Max 128GB | Q3_K_M | Fits | 107 tok/s | 0.3 s |
| Mac Studio M4 Max 128GB | Q3_K_M | Fits | 95 tok/s | 0.4 s |
| AMD Ryzen AI Max+ PRO 495 192GB (Gorgon Halo) | Q4_K_M | Fits | 44 tok/s | 0.4 s |
| NVIDIA RTX Spark N1X 128GB (laptop) | UD-Q4_K_XL | Fits | 35 tok/s | 0.3 s |
| NVIDIA DGX Spark 128GB | UD-Q4_K_XL | Fits | 27 tok/s | 0.8 s |
| AMD Ryzen AI Max+ 395 128GB (Strix Halo) | UD-Q4_K_XL | Fits | 22 tok/s | 0.4 s |
| CPU-only (Ryzen 9 9950X, 96GB DDR5) | GSQ-RCO-IQ3_S | Fits | 22 tok/s | 0.4 s |
| NVIDIA RTX 3090 24GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5090 32GB | Q2_K | Doesn't fit | Won't run | — |
| AMD Radeon AI PRO R9700 32GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 4090 24GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5060 Ti 16GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA Tesla V100 32GB | Q2_K | Doesn't fit | Won't run | — |
| Intel Arc Pro B70 32GB | Q2_K | Doesn't fit | Won't run | — |
| AMD RX 7900 XTX 24GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5070 Ti 16GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 3060 12GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5080 16GB | Q2_K | Doesn't fit | Won't run | — |
| Mac mini M5 Pro 64GB | Q2_K | Doesn't fit | Won't run | — |
| AMD Instinct MI50 32GB | Q2_K | Doesn't fit | Won't run | — |
| MacBook Pro M5 Pro 48GB | Q2_K | Doesn't fit | Won't run | — |
| AMD RX 9070 XT 16GB | Q2_K | Doesn't fit | Won't run | — |
| AMD RX 7900 XT 20GB | Q2_K | Doesn't fit | Won't run | — |
| MacBook M4 Pro 24GB | Q2_K | Doesn't fit | Won't run | — |
| H100 80GB (cloud) | Q2_K | Doesn't fit | Won't run | — |
Estimates for a short prompt on a single device. Measured numbers come from community benchmarks (r/LocalLLaMA, localscore.ai and more); others are derived from similar setups or projected from specs. Open source on GitHub.