Can Desktop PC · GeForce RTX 4090 · 32 GB RAM run Gemma 4 12B?
24 GB VRAM + 32 GB RAM · 1008 GB/s memory bandwidth · Gemma 4 12B has 12B parameters.
Short answer
Yes, excellent for chat and acceptable or better for every workload we test.
Best quantization for chat: Q6_K (9.3 GB of weights) on Ollama. Generation: 60–80 tok/s, leaving about 12 GB free for your other apps.
How it rates for each workload
Same model and machine, different jobs. Agents and long documents send far bigger prompts than chat, so they need much more speed and memory.
| Workload | Verdict | Quant | Generation | First reply | Context | |
|---|---|---|---|---|---|---|
| Chatwith Open WebUI | Excellent | Q6_K | 60–80 tok/s | under 1 s | 8K | Details |
| Coding questionswith Continue | Excellent | Q8_0 | 45–60 tok/s | ≈1 s | 16K | Details |
| Coding in a repositorywith Aider | Acceptable | Q6_K | 60–80 tok/s | ≈2 s | 32K | Details |
| Agentic codingwith OpenCode | Acceptable | Q6_K | 60–80 tok/s | ≈3 s | 32K | Details |
| Long documents (64K)with Open WebUI | Excellent | Q6_K | 55–75 tok/s | ≈9 s | 64K | Details |
Speeds are estimates calibrated against measured benchmarks on similar hardware. “First reply” is the time to read the workload’s opening prompt. How we calculate
Get it running
Copy-paste commands for the Q6_K build with a 64K context. Ollama and llama.cpp download the file straight from Hugging Face.
ollama run hf.co/unsloth/gemma-4-12B-it-GGUF:Q6_K
Downloads 9.79 GB (Q6_K). Ollama's default context is small: set OLLAMA_CONTEXT_LENGTH=65536 before `ollama serve` for long prompts.
Other models for Desktop PC · GeForce RTX 4090 · 32 GB RAM
The best-rated models for chat on this machine.
- Qwen3.6 35B-A3B240–330 tok/sExcellent
- Gemma 4 26B-A4B160–220 tok/sExcellent
- LFM2.5 24B-A2B360–490 tok/sExcellent
- Qwen3.5 35B-A3B240–330 tok/sExcellent
- GLM-4.7-Flash (30B-A3B)240–330 tok/sExcellent
- gpt-oss-20b≈210 tok/sExcellent
Cheapest machines for Gemma 4 12B
Hardware rated comfortable or better for chat, lowest price first.
- Mac mini M4 24 GB$999 · 11–15 tok/sComfortable
- Desktop PC · Intel Arc B580 · 32 GB RAM$1,150 · 25–35 tok/sExcellent
- Desktop PC · GeForce RTX 3060 12GB · 32 GB RAM$1,200 · 25–40 tok/sExcellent
- Mac mini M6 24 GB$1,299 · 10–17 tok/sComfortable
- Desktop PC · GeForce RTX 5060 Ti 16GB · 32 GB RAM$1,330 · 30–40 tok/sExcellent
- Desktop PC · GeForce RTX 4060 Ti 16GB · 32 GB RAM$1,350 · 16–25 tok/sExcellent
Same chip, other memory: 64 GB
Different tool, context size or workload?
These pages use typical settings. The full check models your exact setup.