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URL: https://willitrunai.com/can-run/qwen-3-coder-30b-a3b-on-l40-48gb


Can Qwen3-Coder 30B A3B Instruct run on NVIDIA L40 48GB?

YES — Runs Great

S96Excellent
Estimated — low-sample bucket· few comparable runs

Qwen3-Coder 30B A3B Instruct needs ~25.8 GB VRAM. NVIDIA L40 48GB has 48.0 GB. With Q4_K_M quantization, expect ~73 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: HighStack: StandardBottleneck: 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) — 25.8 GB, 73.4 tok/s, Runs well
25.8 GB required48.0 GB available
54% VRAM used

Fit status

Runs well

Decode

73.4 tok/s

TTFT

2639 ms

Safe context

256K

Memory

25.8 GB / 48.0 GB

Memory breakdown

Weights18.6 GB
KV Cache1.5 GB
Runtime0.9 GB
Headroom4.8 GB

See how fast it feels

See how fast it feelsQwen3-Coder 30B A3B Instruct on NVIDIA L40 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: 73.4 tok/s decode · 2.6s TTFT (warm) · 183 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
ChatSRuns well73.4 tok/s1439 ms256K
CodingSRuns well73.4 tok/s2639 ms256K
Agentic CodingSRuns well93.7 tok/s3005 ms256K
ReasoningSRuns well73.4 tok/s3118 ms256K
RAGSRuns well73.4 tok/s4798 ms256K

Quantization options

How Qwen3-Coder 30B A3B Instruct (30.5B params) fits at each quantization level on NVIDIA L40 48GB (48.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
11.9 GB
LowS87
Q3_K_S
3
14.9 GB
LowS88
NVFP4
4

Get started

Copy-paste commands to run Qwen3-Coder 30B A3B Instruct on your machine.

Run

ollama run qwen3-coder

Frequently asked questions

See all results for NVIDIA L40 48GBSee all hardware for Qwen3-Coder 30B A3B Instruct
17.1 GB
Medium
S88
Q4_K_M
4
18.6 GB
MediumS89
Q5_K_M
5
22.0 GB
HighS90
Q6_K
6
25.0 GB
HighS91
Q8_0Best for your GPU
8
32.6 GB
Very HighS91
F16
16
62.5 GB
MaximumF0