Gemma 4 31B IT at Q4_K_M needs about 20.5 GB, more than the 10 GB of the RTX 3080: part of the model runs from system RAM, which slows generation. At Q3_K_M it does not fit in VRAM.
Q4_K_M · 8K context
The model needs about 20.5 GB but only 9.7 GB of VRAM is usable: 10.8 GB must be loaded into system RAM. It runs, 47% on the GPU, but more slowly.
~20.5 GB (19.7 GB–21.3 GB) needed · estimate
10.8 GB must be offloaded to system RAM
EstimateData updated 40 days agoSource: Run LLM Locally engine, Hugging Face config.json + model card
What makes this estimate less reliable
| Gemma 4 31B IT Q8_08K~34.5 GB · 0.8–1.6 tok/s estimate | Not recommended |
|---|---|
| Gemma 4 31B IT Q6_K8K~27.2 GB · 1.1–2 tok/s estimate | Possible but slow |
| Gemma 4 31B IT Q5_K_M8K~23.7 GB · 1.4–3 tok/s estimate | Possible but slow |
| Gemma 4 31B IT Q4_K_M8K~20.5 GB · 1.9–3.5 tok/s estimate | Possible but slow |
| Gemma 4 31B IT IQ4_XS8K~18.6 GB · 2.5–4.5 tok/s estimate | Possible but slow |
| Gemma 4 31B IT Q3_K_M8K~17 GB · 3–5.5 tok/s estimate | CPU/GPU offload |
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AMD
CompatibleRuns Gemma 4 31B IT Q4_K_M entirely in memory
Unified memory PC
CompatibleRuns Gemma 4 31B IT Q4_K_M entirely in memory
Lowest memory tier
Compatible with limitsRuns Gemma 4 31B IT Q4_K_M entirely in memory
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