Gemma 2 9B needs ~17.0 GB VRAM. MacBook Pro M3 Max 48GB has 34.6 GB. With Q4_K_M quantization, expect ~46 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
45.9 tok/s
TTFT
4218 ms
Safe context
8K
Memory
17.0 GB / 34.6 GB
This setup is broadly balanced for this model.
Shared-memory contention still exists
The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs well | 45.9 tok/s | 2301 ms | 8K |
| Coding | B | Runs well | 45.9 tok/s | 4218 ms | 8K |
| Agentic Coding | B | Runs well | 45.9 tok/s | 6135 ms | 8K |
| Reasoning | B | Runs well | 45.9 tok/s | 4985 ms | 8K |
| RAG | B | Runs well | 45.9 tok/s | 7669 ms | 8K |
Inference speed
Estimated decode speed (tokens/sec) for Gemma 2 9B at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~126 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.
| GPU / Mac | Memory | Quant | Speed (tok/s) | Fits? |
|---|---|---|---|---|
 RTX 5090 32GB | 32 GB | Q4_K_M | 126.0 | Fits |
| RTX 4090 24GB | 24 GB | Q4_K_M | 126.0 | Fits |
| RTX 3090 24GB | 24 GB | Q4_K_M | 125.3 | Fits |
RX 7900 XTX 24GB | 24 GB | Q4_K_M | 86.6 | Fits |
Mac Studio M3 Ultra 256GB | 256 GB | Q4_K_M | 80.7 | Fits |
| RTX 4080 Super 16GB | 16 GB | Q4_K_M | 78.2 | Fits |
MacBook Pro M4 Max 64GB | 64 GB | Q4_K_M | 71.7 | Fits |
Mac Studio M2 Ultra 128GB | 128 GB | Q4_K_M | 67.3 | Fits |
Mac Studio M1 Ultra 128GB | 128 GB | Q4_K_M | 63.8 | Fits |
MacBook Pro M4 Max 128GB | 128 GB | Q4_K_M | 54.3 | Fits |
MacBook Pro M3 Max 64GB | 64 GB | Q4_K_M | 45.9 | Fits |
| RTX 4070 12GB | 12 GB | Q4_K_M | 45.7 | Heavy offload |
MacBook Pro M1 Max 64GB | 64 GB | Q4_K_M | 42.1 | Fits |
MacBook Pro M4 Pro 48GB | 48 GB | Q4_K_M | 37.0 | Fits |
| RTX 3060 12GB | 12 GB | Q4_K_M | 28.7 | Heavy offload |
| RTX 4060 8GB | 8 GB | Q4_K_M | 10.9 | Too big |
Estimates for single-stream decoding at Q4_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.
How Gemma 2 9B (9B params) fits at each quantization level on MacBook Pro M3 Max 48GB (34.6 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 3.5 GB | Low | B57 |
Q3_K_S | 3 | 4.4 GB | Low | B58 |
NVFP4 | 4 | 5.0 GB | Medium | B58 |
Q4_K_M | 4 | 5.5 GB | Medium | B58 |
Q5_K_M | 5 | 6.5 GB | High | B58 |
Q6_K | 6 | 7.4 GB | High | B59 |
Q8_0 | 8 | 9.6 GB | Very High | B59 |
F16Best for your GPU | 16 | 18.5 GB | Maximum | B64 |
Copy-paste commands to run Gemma 2 9B on your machine.
Run
ollama run gemma2Upgrade options
Raises estimated decode speed by about 93%.
Adds memory headroom for longer context windows and future model growth.
~$3,999 MSRP
Raises estimated decode speed by about 83%.
Adds memory headroom for longer context windows and future model growth.
~$3,999 MSRP
Yes, MacBook Pro M3 Max 48GB can run Gemma 2 9B with a B grade (Runs well). Expected decode speed: 45.9 tok/s.
Gemma 2 9B (9B parameters) requires approximately 17.0 GB of memory with Q4_K_M quantization.
The recommended quantization for Gemma 2 9B is Q4_K_M, which balances quality and memory efficiency.
On MacBook Pro M3 Max 48GB, Gemma 2 9B achieves approximately 45.9 tokens per second decode speed with a time-to-first-token of 4218ms using Q4_K_M quantization.
For coding workloads, Gemma 2 9B on MacBook Pro M3 Max 48GB receives a B grade with 45.9 tok/s and 8K context.
On MacBook Pro M3 Max 48GB, Gemma 2 9B can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.
Not always. MacBook Pro M3 Max 48GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.
Paste this snippet into any page to show a live fit card.
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