Can Granite 4.1 8B run on RTX 4090 24GB?

YES — Runs Great

A76Great

Estimated from fit model

Granite 4.1 8B needs ~10.9 GB VRAM. RTX 4090 24GB has 24.0 GB. With Q4_K_M quantization, expect ~112 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: BasicBottleneck: 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) — 10.9 GB, 112.0 tok/s, Runs well

10.9 GB required24.0 GB available

45% VRAM used

Fit status

Runs well

Decode

112.0 tok/s

TTFT

1729 ms

Safe context

102K

Memory

10.9 GB / 24.0 GB

Memory breakdown

Weights4.9 GB

KV Cache2.4 GB

Runtime1.2 GB

Headroom2.4 GB

See how fast it feels

See how fast it feelsGranite 4.1 8B 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: 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

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Runs well	112.0 tok/s	943 ms	102K
Coding	A	Runs well	112.0 tok/s	1729 ms	102K
Agentic Coding	A	Runs well	112.0 tok/s	2514 ms	102K
Reasoning	A	Runs well	112.0 tok/s	2043 ms	102K
RAG	A	Runs well	112.0 tok/s	3143 ms	102K

Quantization options

How Granite 4.1 8B (8B params) fits at each quantization level on RTX 4090 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	3.1 GB	Low	B69
Q3_K_S	3	3.9 GB	Low	B69
NVFP4	4	4.5 GB	Medium	B69
Q4_K_M	4	4.9 GB	Medium	B70
Q5_K_M	5	5.8 GB	High	A70
Q6_K	6	6.6 GB	High	A71
Q8_0	8	8.6 GB	Very High	A72
F16Best for your GPU	16	16.4 GB	Maximum	A74

Get started

Copy-paste commands to run Granite 4.1 8B on your machine.

Run

ollama run granite4.1:8b

Your hardware

More models your RTX 4090 24GB can run

Model	Params	Grade	Decode
Qwen3-Coder 30B A3B Instruct	30.5B	S	115.8 tok/s
Qwen 3.5 27B	27B	S	50.2 tok/s
Qwen 3.6 27B	27B	S	50.4 tok/s
Qwen3-VL 30B A3B Instruct	30B	S	119.8 tok/s
Qwen 3.5 9B	9B	S	126 tok/s

Frequently asked questions

Can RTX 4090 24GB run Granite 4.1 8B?

Yes, RTX 4090 24GB can run Granite 4.1 8B with a A grade (Runs well). Expected decode speed: 112.0 tok/s.

How much VRAM does Granite 4.1 8B need?

Granite 4.1 8B (8B parameters) requires approximately 10.9 GB of memory with Q4_K_M quantization.

What is the best quantization for Granite 4.1 8B?

The recommended quantization for Granite 4.1 8B is Q4_K_M, which balances quality and memory efficiency.

What speed will Granite 4.1 8B run at on RTX 4090 24GB?

On RTX 4090 24GB, Granite 4.1 8B achieves approximately 112.0 tokens per second decode speed with a time-to-first-token of 1729ms using Q4_K_M quantization.

Can RTX 4090 24GB run Granite 4.1 8B for coding?

For coding workloads, Granite 4.1 8B on RTX 4090 24GB receives a A grade with 112.0 tok/s and 102K context.

What context window can Granite 4.1 8B use on RTX 4090 24GB?

On RTX 4090 24GB, Granite 4.1 8B can safely use up to 102K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RTX 4090 24GB See all hardware for Granite 4.1 8B

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