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URL: https://willitrunai.com/can-run/granite-4.1-3b-on-a4000-16gb


Can Granite 4.1 3B run on RTX A4000 16GB?

YES — Runs Great

B64Good
Estimated from fit model

Granite 4.1 3B needs ~5.9 GB VRAM. RTX A4000 16GB has 16.0 GB. With Q4_K_M quantization, expect ~42 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: LowStack: BasicBottleneck: Balanced
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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.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 5.9 GB, 42.0 tok/s, Runs well
5.9 GB required16.0 GB available
37% VRAM used

Fit status

Runs well

Decode

42.0 tok/s

TTFT

4610 ms

Safe context

131K

Memory

5.9 GB / 16.0 GB

Memory breakdown

Weights1.8 GB
KV Cache1.2 GB
Runtime1.2 GB
Headroom1.6 GB

See how fast it feels

See how fast it feelsGranite 4.1 3B on RTX A4000 16GB
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

WorkloadGradeFitDecodeTTFTContext
ChatBRuns well42.0 tok/s2514 ms131K
CodingBRuns well42.0 tok/s4610 ms131K
Agentic CodingBRuns well42.0 tok/s6705 ms131K
ReasoningBRuns well42.0 tok/s5448 ms131K
RAGBRuns well42.0 tok/s8381 ms131K

Quantization options

How Granite 4.1 3B (3B params) fits at each quantization level on RTX A4000 16GB (16.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
1.2 GB
LowB63
Q3_K_S
3
1.5 GB
LowB63
NVFP4
4

Get started

Copy-paste commands to run Granite 4.1 3B on your machine.

Run

ollama run granite4.1:3b

Upgrade options

Hardware that runs Granite 4.1 3B well

MacBook Air M4 24GBBudget pick
24 GB Unified (+8)
B
This setup is broadly balanced for this model.42 tok/s decode

~$1,099 MSRP

MacBook Pro M3 24GBBest value
24 GB Unified (+8)
B
This setup is broadly balanced for this model.40.1 tok/s decode

~$1,099 MSRP

Frequently asked questions

See all results for RTX A4000 16GBSee all hardware for Granite 4.1 3B
1.7 GB
Medium
B63
Q4_K_M
4
1.8 GB
MediumB63
Q5_K_M
5
2.2 GB
HighB63
Q6_K
6
2.5 GB
HighB64
Q8_0
8
3.2 GB
Very HighB64
F16Best for your GPU
16
6.1 GB
MaximumB67