Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored needs ~63.5 GB VRAM. Mac Studio M3 Ultra 256GB has 184.3 GB. With Q4_K_M quantization, expect ~19 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
19.0 tok/s
TTFT
10178 ms
Safe context
360K
Memory
63.5 GB / 184.3 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 | C | Runs well | 19.0 tok/s | 5552 ms | 360K |
| Coding | C | Runs well | 19.0 tok/s | 10178 ms | 360K |
| Agentic Coding | C | Runs well | 19.0 tok/s | 14805 ms | 360K |
| Reasoning | C | Runs well | 19.0 tok/s | 12029 ms | 360K |
| RAG | C | Runs well | 19.0 tok/s | 18506 ms | 360K |
Inference speed
Estimated decode speed (tokens/sec) for Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored at Q4_K_M across popular GPUs and Apple Silicon, including multi-GPU rigs, using the fastest local runtime per device. Fastest is 2× RX 7900 XTX 24GB at ~40 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? |
|---|---|---|---|---|
2× RX 7900 XTX 24GB | 48 GB | Q4_K_M | 40.1 | Tight |
 2× RTX 4090 24GB | 48 GB | Q4_K_M | 21.1 | Tight |
How Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored (48B params) fits at each quantization level on Mac Studio M3 Ultra 256GB (184.3 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 18.7 GB | Low | D37 |
Q3_K_S | 3 | 23.5 GB | Low | D38 |
NVFP4 |
Copy-paste commands to run Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored on your machine.
Run
lms load hf-davidau--qwen3-48b-a4b-savant-commander-distill-12x-closed-open-heretic-uncensored-gguf && lms server startUpgrade options
Raises estimated decode speed by about 950%.
Adds memory headroom for longer context windows and future model growth.
~$8,000 MSRP
Raises estimated decode speed by about 643%.
~$15,000 MSRP
Yes, Mac Studio M3 Ultra 256GB can run Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored with a C grade (Runs well). Expected decode speed: 19.0 tok/s.
Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored (48B parameters) requires approximately 63.5 GB of memory with Q4_K_M quantization.
The recommended quantization for Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored is Q4_K_M, which balances quality and memory efficiency.
On Mac Studio M3 Ultra 256GB, Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored achieves approximately 19.0 tokens per second decode speed with a time-to-first-token of 10178ms using Q4_K_M quantization.
For coding workloads, Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored on Mac Studio M3 Ultra 256GB receives a C grade with 19.0 tok/s and 360K context.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/hf-davidau--qwen3-48b-a4b-savant-commander-distill-12x-closed-open-heretic-uncensored-gguf-on-m3-ultra-256gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
| RTX 5090 32GB | 32 GB | Q4_K_M | 20.6 | Too big |
MacBook Pro M4 Max 128GB | 128 GB | Q4_K_M | 20.5 | Fits |
MacBook Pro M4 Max 64GB | 64 GB | Q4_K_M | 20.5 | Tight |
| 2× RTX 3090 24GB | 48 GB | Q4_K_M | 19.4 | Tight |
Mac Studio M3 Ultra 256GB | 256 GB | Q4_K_M | 19.0 | Fits |
| 4× RTX 3060 12GB | 48 GB | Q4_K_M | 17.1 | Tight |
Mac Studio M2 Ultra 128GB | 128 GB | Q4_K_M | 15.8 | Fits |
Mac Studio M1 Ultra 128GB | 128 GB | Q4_K_M | 15.0 | Fits |
MacBook Pro M4 Pro 48GB | 48 GB | Q4_K_M | 10.0 | Heavy offload |
MacBook Pro M3 Max 64GB | 64 GB | Q4_K_M | 8.2 | Tight |
MacBook Pro M1 Max 64GB | 64 GB | Q4_K_M | 7.5 | Tight |
| RTX 4090 24GB | 24 GB | Q4_K_M | 7.3 | Too big |
RX 7900 XTX 24GB | 24 GB | Q4_K_M | 6.7 | Too big |
| RTX 3090 24GB | 24 GB | Q4_K_M | 6.2 | Too big |
| RTX 4080 Super 16GB | 16 GB | Q4_K_M | 3.1 | Too big |
| RTX 4070 12GB | 12 GB | Q4_K_M | 2.0 | Too big |
| RTX 3060 12GB | 12 GB | Q4_K_M | 2.0 | Too big |
| RTX 4060 8GB | 8 GB | Q4_K_M | 2.0 | 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.
| 4 |
26.9 GB |
| Medium |
| D38 |
Q4_K_M | 4 | 29.3 GB | Medium | D39 |
Q5_K_M | 5 | 34.6 GB | High | D39 |
Q6_K | 6 | 39.4 GB | High | D40 |
Q8_0 | 8 | 51.4 GB | Very High | C41 |
F16Best for your GPU | 16 | 98.4 GB | Maximum | C47 |
On Mac Studio M3 Ultra 256GB, Qwen3 48B A4B Savant Commander Distill 12X Closed Open Heretic Uncensored can safely use up to 360K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.
Not always. Mac Studio M3 Ultra 256GB 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.