Gemma 3 12B needs ~15.8 GB VRAM. RTX A5500 24GB has 24.0 GB. With Q4_K_M quantization, expect ~86 tok/s.
Operating mode
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
Fit status
Runs well
Decode
85.9 tok/s
TTFT
2253 ms
Safe context
43K
Memory
15.8 GB / 24.0 GB
This setup is broadly balanced for this model.
No major red flags
This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | A | Runs well | 85.9 tok/s | 1229 ms | 43K |
| Coding | S | Runs well | 85.9 tok/s | 2253 ms | 43K |
| Agentic Coding | A | Tight fit | 85.9 tok/s | 3277 ms | 43K |
| Reasoning | S | Runs well | 85.9 tok/s | 2663 ms | 43K |
| RAG | A | Tight fit | 85.9 tok/s | 4096 ms | 43K |
How Gemma 3 12B (12B params) fits at each quantization level on RTX A5500 24GB (24.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 4.7 GB | Low | A75 |
Q3_K_S | 3 | 5.9 GB | Low | A76 |
NVFP4 | 4 | 6.7 GB | Medium | A76 |
Q4_K_M | 4 | 7.3 GB | Medium | A76 |
Q5_K_M | 5 | 8.6 GB | High | A77 |
Q6_K | 6 | 9.8 GB | High | A78 |
Q8_0Best for your GPU | 8 | 12.8 GB | Very High | A80 |
F16 | 16 | 24.6 GB | Maximum | F0 |
Copy-paste commands to run Gemma 3 12B on your machine.
Run
ollama run gemma3:12bYour hardware
| Model | Params | Grade | Decode | Capabilities |
|---|---|---|---|---|
| 30.5B | S | 90.6 tok/s | ||
| 27B | S | 39.3 tok/s | ||
| 27B | S | 39.4 tok/s | ||
| 30B | S | 93.7 tok/s | ||
| 35B | A | 50.7 tok/s |
Yes, RTX A5500 24GB can run Gemma 3 12B with a S grade (Runs well). Expected decode speed: 85.9 tok/s.
Gemma 3 12B (12B parameters) requires approximately 15.8 GB of memory with Q4_K_M quantization.
The recommended quantization for Gemma 3 12B is Q4_K_M, which balances quality and memory efficiency.
On RTX A5500 24GB, Gemma 3 12B achieves approximately 85.9 tokens per second decode speed with a time-to-first-token of 2253ms using Q4_K_M quantization.
For coding workloads, Gemma 3 12B on RTX A5500 24GB receives a S grade with 85.9 tok/s and 43K context.
On RTX A5500 24GB, Gemma 3 12B can safely use up to 43K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/gemma-3-12b-on-rtx-a5500-24gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
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