Can RTX 3090 run Gemma 4 31B?
Yes. Measured 38.8 tok/s generation (llama.cpp b11658 (llama-bench), Q4_K_M; source).
Every measured result for Gemma 4 31B on RTX 3090
| Build | Quant / setup | Engine | tok/s | |
|---|---|---|---|---|
| RTX 3090 running Gemma 4 31B Q4_K_M (llama-bench) | Q4_K_M | llama.cpp b11658 (llama-bench) | 38.8 | source |
Memory: RTX 3090 has 24 GB. Gemma 4 31B weights are about 18.8 GB at Q4_K_M (30.7B 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 Gemma 4 31B: best home rig for Gemma 4 31B.
Gemma 4 31B on other hardware: RTX 4090 · RTX 5090 · Strix Halo (Radeon 8060S)
Other models measured on RTX 3090: DeepSeek R1 671B · Flint 40B-A2.5B · GLM 4.7 Flash · Nemotron 3.5 Bolt 74B-A9B · Qwen3.6 27B · Qwen3.6 35B-A3B · Qwen3.8 27B · gpt-oss 20B
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