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URL: https://willitrunai.com/can-run/granite-3.1-8b-on-l40s-48gb


Can Granite 3.1 8B run on NVIDIA L40S 48GB?

YES — Runs Great

C52Usable
Estimated from fit model

Granite 3.1 8B needs ~12.8 GB VRAM. NVIDIA L40S 48GB has 48.0 GB. With Q4_K_M quantization, expect ~112 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: 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) — 12.8 GB, 112.0 tok/s, Runs well
12.8 GB required48.0 GB available
27% VRAM used

Fit status

Runs well

Decode

112.0 tok/s

TTFT

1729 ms

Safe context

128K

Memory

12.8 GB / 48.0 GB

Memory breakdown

Weights4.9 GB
KV Cache2.0 GB
Runtime1.2 GB
Headroom4.8 GB

See how fast it feels

See how fast it feelsGranite 3.1 8B on NVIDIA L40S 48GB
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: 112.0 tok/s decode · 1.7s TTFT (warm) · 280 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
ChatCRuns well112.0 tok/s943 ms128K
CodingCRuns well112.0 tok/s1729 ms128K
Agentic CodingCRuns well112.0 tok/s2514 ms128K
ReasoningCRuns well112.0 tok/s2043 ms128K
RAGCRuns well112.0 tok/s3143 ms128K

Quantization options

How Granite 3.1 8B (8B params) fits at each quantization level on NVIDIA L40S 48GB (48.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
3.1 GB
LowC46
Q3_K_S
3
3.9 GB
LowC46
NVFP4
4

Get started

Copy-paste commands to run Granite 3.1 8B on your machine.

Run

ollama run granite3.1-dense

Frequently asked questions

See all results for NVIDIA L40S 48GBSee all hardware for Granite 3.1 8B
4.5 GB
Medium
C46
Q4_K_M
4
4.9 GB
MediumC46
Q5_K_M
5
5.8 GB
HighC46
Q6_K
6
6.6 GB
HighC47
Q8_0
8
8.6 GB
Very HighC47
F16Best for your GPU
16
16.4 GB
MaximumC49