MacBook Pro M3 Pro 18GBコスパ重視
18 GB Unified (+6)
B
This setup is broadly balanced for this model.42 tok/sデコード
〜$1,999 MSRP
Can Granite 4.1 3B run on RX 6750 XT 12GB?
YES — Runs Great
B66Good
Estimated from fit model
Granite 4.1 3B needs ~5.2 GB VRAM. RX 6750 XT 12GB has 12.0 GB. With Q4_K_M quantization, expect ~42 tok/s.
Runtime: llama.cppCapacity: RoomyBandwidth: LowStack: StandardBottleneck: Balanced
Operating mode
Choose the run profile you care about
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
Q4_K_M (Medium quality) — 5.2 GB, 42.0 tok/s, Runs well
5.2 GB required12.0 GB available
43% VRAM used
Fit status
Runs well
Decode
42.0 tok/s
TTFT
4610 ms
Safe context
106K
Memory
5.2 GB / 12.0 GB
Memory breakdown
Weights1.8 GB
KV Cache1.2 GB
Runtime0.9 GB
Headroom1.2 GB
See how fast it feels
See how fast it feelsGranite 4.1 3B on RX 6750 XT 12GB
1st promptCold start — includes initialization
>Write a Python function to sort a list
Here's a Python function that sorts a list using quicksort:
def quicksort(arr):
if len(arr) <= 1:
return arr
pivot = arr[len(arr) // 2]
left = [x for x in arr if x < pivot]
middle = [x for x in arr if x == pivot]
right = [x for x in arr if x > pivot]
return quicksort(left) + middle + quicksort(right)
# Example usage
numbers = [3, 6, 8, 10, 1, 2, 1]
print(quicksort(numbers)) # [1, 1, 2, 3, 6, 8, 10]
The algorithm picks a pivot, partitions the list into smaller, equal, and larger elements, then recursively sorts each partition and concatenates the results.
2nd promptWarm — model ready, no init overhead
>Now add type hints and a docstring
def quicksort(arr: list[int]) -> list[int]:
"""Sort a list using the quicksort algorithm.
Args:
arr: List of integers to sort.
Returns:
A new sorted list.
"""
if len(arr) <= 1:
return arr
pivot = arr[len(arr) // 2]
left = [x for x in arr if x < pivot]
middle = [x for x in arr if x == pivot]
right = [x for x in arr if x > pivot]
return quicksort(left) + middle + quicksort(right)
Added type hints for the input and return type, plus a Google-style docstring.
Estimated: 42.0 tok/s decode · 4.6s TTFT (warm) · 105 tok/s prefill
What limits this setup
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.
Best improvement path
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs well | 42.0 tok/s | 2514 ms | 106K |
| Coding | B | Runs well | 42.0 tok/s | 4610 ms | 106K |
| Agentic Coding | B | Runs well | 42.0 tok/s | 6705 ms | 106K |
| Reasoning | B | Runs well | 42.0 tok/s | 5448 ms | 106K |
| RAG | B | Runs well | 42.0 tok/s | 8381 ms | 106K |
Quantization options
How Granite 4.1 3B (3B params) fits at each quantization level on RX 6750 XT 12GB (12.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 1.2 GB | Low | B64 |
Q3_K_S | 3 | 1.5 GB | Low | B65 |
NVFP4 | 4 | 1.7 GB | Medium | B65 |
Q4_K_M | 4 | 1.8 GB | Medium | B65 |
Q5_K_M | 5 | 2.2 GB | High | B65 |
Q6_K | 6 | 2.5 GB | High | B66 |
Q8_0 | 8 | 3.2 GB | Very High | B67 |
F16Best for your GPU | 16 | 6.1 GB | Maximum | B69 |
Get started
Copy-paste commands to run Granite 4.1 3B on your machine.
Run
ollama run granite4.1:3bアップグレードオプション
Granite 4.1 3Bを快適に動かすハードウェア
Frequently asked questions
Can RX 6750 XT 12GB run Granite 4.1 3B?
Yes, RX 6750 XT 12GB can run Granite 4.1 3B with a B grade (Runs well). Expected decode speed: 42.0 tok/s.
How much VRAM does Granite 4.1 3B need?
Granite 4.1 3B (3B parameters) requires approximately 5.2 GB of memory with Q4_K_M quantization.
What is the best quantization for Granite 4.1 3B?
The recommended quantization for Granite 4.1 3B is Q4_K_M, which balances quality and memory efficiency.
What speed will Granite 4.1 3B run at on RX 6750 XT 12GB?
On RX 6750 XT 12GB, Granite 4.1 3B achieves approximately 42.0 tokens per second decode speed with a time-to-first-token of 4610ms using Q4_K_M quantization.
Can RX 6750 XT 12GB run Granite 4.1 3B for coding?
For coding workloads, Granite 4.1 3B on RX 6750 XT 12GB receives a B grade with 42.0 tok/s and 106K context.
What context window can Granite 4.1 3B use on RX 6750 XT 12GB?
On RX 6750 XT 12GB, Granite 4.1 3B can safely use up to 106K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.
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<iframe src="https://willitrunai.com/embed/granite-4.1-3b-on-rx-6750-xt-12gb" 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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