Can Qwen3-Coder 30B A3B Instruct run on RTX 4090 24GB?

Q: What should I upgrade first if Qwen3-Coder 30B A3B Instruct feels slow on RTX 4090 24GB?

Buy headroom, not only minimum fit. A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

YES — With Offload

S97Excellent

Estimated — low-sample bucket· few comparable runs

Qwen3-Coder 30B A3B Instruct needs ~23.4 GB VRAM. RTX 4090 24GB has 24.0 GB. With Q4_K_M quantization, expect ~83 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: HighStack: 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.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 23.4 GB, 83.4 tok/s, Runs with offload

23.4 GB required24.0 GB available

98% VRAM used

Fit status

Runs with offload

Decode

83.4 tok/s

TTFT

2321 ms

Safe context

23K

Memory

23.4 GB / 24.0 GB

Memory breakdown

Weights18.6 GB

KV Cache1.5 GB

Runtime0.9 GB

Headroom2.4 GB

See how fast it feels

See how fast it feelsQwen3-Coder 30B A3B Instruct on RTX 4090 24GB
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: 83.4 tok/s decode · 2.3s TTFT (warm) · 209 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Very little memory headroom

You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.

Best improvement path

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	S	Tight fit	83.4 tok/s	1266 ms	23K
Coding	S	Runs with offload	83.4 tok/s	2321 ms	23K
Agentic Coding	S	Runs with offload (needs ~0.6 GB host RAM)	58.2 tok/s	4838 ms	23K
Reasoning	S	Runs with offload	83.4 tok/s	2743 ms	23K
RAG	S	Runs with offload (needs ~0.6 GB host RAM)	58.2 tok/s	6047 ms

Quantization options

How Qwen3-Coder 30B A3B Instruct (30.5B params) fits at each quantization level on RTX 4090 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	11.9 GB	Low	S93
Q3_K_S	3	14.9 GB	Low	S93
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

Can RTX 4090 24GB run Qwen3-Coder 30B A3B Instruct?

Yes, RTX 4090 24GB can run Qwen3-Coder 30B A3B Instruct with a S grade (Runs with offload). Expected decode speed: 83.4 tok/s.

How much VRAM does Qwen3-Coder 30B A3B Instruct need?

Qwen3-Coder 30B A3B Instruct (30.5B parameters) requires approximately 23.4 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen3-Coder 30B A3B Instruct?

The recommended quantization for Qwen3-Coder 30B A3B Instruct is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen3-Coder 30B A3B Instruct run at on RTX 4090 24GB?

On RTX 4090 24GB, Qwen3-Coder 30B A3B Instruct achieves approximately 83.4 tokens per second decode speed with a time-to-first-token of 2321ms using Q4_K_M quantization.

Can RTX 4090 24GB run Qwen3-Coder 30B A3B Instruct for coding?

For coding workloads, Qwen3-Coder 30B A3B Instruct on RTX 4090 24GB receives a S grade with 83.4 tok/s and 23K context.

What context window can Qwen3-Coder 30B A3B Instruct use on RTX 4090 24GB?

On RTX 4090 24GB, Qwen3-Coder 30B A3B Instruct can safely use up to 23K tokens of context. The model's official context limit is 256K, but available memory constrains the safe maximum.

See all results for RTX 4090 24GB See all hardware for Qwen3-Coder 30B A3B Instruct

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