Can 2x RTX 5070 Ti run Qwen3.8 Flash-Next?
Probably only partly: the weights are larger than its memory, so part of the model likely ran from system RAM. Measured 182 tok/s generation with part of the model offloaded to system RAM (capy-flash v0.7.0, 2 GPUs, agentic decode, GSQ-RCO (64 GB edition); source).
Every measured result for Qwen3.8 Flash-Next on 2x RTX 5070 Ti
| Build | Quant / setup | Engine | tok/s | |
|---|---|---|---|---|
| Dual RTX 5070 Ti on Ryzen 9 9900X (capy-flash maintainer rig) | GSQ-RCO (64 GB edition) | capy-flash v0.7.0, 2 GPUs, agentic decode | 182 CPU offload | source |
| Dual RTX 5070 Ti on Ryzen 9 9900X (capy-flash maintainer rig) | NVFP4 | capy-flash v0.6.0, 2 GPUs, agentic decode | 155 CPU offload | source |
Memory: 2x RTX 5070 Ti has 32 GB. Qwen3.8 Flash-Next weights are about 110.1 GB at Q4_K_M (180B params × 4.89 bits ÷ 8, before context/KV cache). Arithmetic, not a measurement; long contexts need more. Check other quants in the VRAM calculator.
Speeds are decode (generation) tokens/sec as reported by each source; quant, engine and context differ, so small gaps are noise.
All measured speeds for Qwen3.8 Flash-Next: best home rig for Qwen3.8 Flash-Next.
Qwen3.8 Flash-Next on other hardware: 2x Intel Arc Pro B70 · 2x RTX 5080 · 2x RTX PRO 4000 Blackwell · 2x Tesla V100 32GB · DGX Spark (GB10) · RTX 5090
Other models measured on 2x RTX 5070 Ti: Qwen3.8 27B
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