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Yes. Qwen3 8B fits in fast memory on RTX 3080 12GB at Q8_0 (9.9 GB needed, 11.5 GB usable), about 61 tok/s (estimate).
Hardware: RTX 3080 12GB · Model: Qwen3 8B
RTX 3080 12GB has 12 GB of VRAM and 912 GB/s of memory bandwidth. The checker holds back 0.5 GB of VRAM for the driver and assumes 16 GB of system RAM, so fast memory usable by Ollama is 11.5 GB. Partial offload may also use 60% of that system RAM. Qwen3 8B (8.19B, Alibaba) at Q8_0 is a 8.9 GB download and needs 9.9 GB with headroom for about 8k tokens.
| Best quant | Q8_0 |
|---|---|
| Download size | 8.9 GB |
| Memory needed | 9.9 GB |
| Usable fast memory | 11.5 GB |
| Fit | fits in fast memory |
| Estimated speed | ~61 tok/s (estimate) |
| Command | ollama run qwen3:8b-q8_0 |
Estimates, not benchmarks. Model sizes are ollama.com download sizes; memory needed adds headroom for ~8k tokens of context; speeds are rough figures from memory bandwidth. Data updated 2026-10-23.
A project by OnDevice Labs · llms.txt