Can Gemma 4 26B A4B run on RTX PRO 4000 Blackwell 24GB?

Q: What should I upgrade first if Gemma 4 26B A4B feels slow on RTX PRO 4000 Blackwell 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 — Tight Fit

S89Excellent

Estimated from fit model

Gemma 4 26B A4B needs ~22.6 GB VRAM. RTX PRO 4000 Blackwell 24GB has 24.0 GB. With Q4_K_M quantization, expect ~92 tok/s.

Runtime: OllamaCapacity: TightBandwidth: MediumStack: 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) — 22.6 GB, 91.7 tok/s, Tight fit

22.6 GB required24.0 GB available

94% VRAM used

Fit status

Tight fit

Decode

91.7 tok/s

TTFT

2112 ms

Safe context

22K

Memory

22.6 GB / 24.0 GB

Memory breakdown

Weights15.4 GB

KV Cache3.7 GB

Runtime1.2 GB

Headroom2.4 GB

See how fast it feels

See how fast it feelsGemma 4 26B A4B on RTX PRO 4000 Blackwell 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: 91.7 tok/s decode · 2.1s TTFT (warm) · 229 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	91.7 tok/s	1152 ms	22K
Coding	S	Tight fit	91.7 tok/s	2112 ms	22K
Agentic Coding	A	Very compromised (needs ~1.3 GB host RAM)	58.2 tok/s	4840 ms	22K
Reasoning	S	Tight fit	91.7 tok/s	2496 ms	22K
RAG	A	Very compromised (needs ~1.3 GB host RAM)	58.2 tok/s	6051 ms

Quantization options

How Gemma 4 26B A4B (25.200000762939453B params) fits at each quantization level on RTX PRO 4000 Blackwell 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	9.8 GB	Low	A84
Q3_K_S	3	12.3 GB	Low	S85
NVFP4	4

Get started

Copy-paste commands to run Gemma 4 26B A4B on your machine.

Run

ollama run gemma4:26b

Your hardware

More models your RTX PRO 4000 Blackwell 24GB can run

Model	Params	Grade	Decode	Capabilities
Qwen3-Coder 30B A3B Instruct	30.5B	S	85.4 tok/s
Qwen 3.5 27B	27B	S	37 tok/s

Frequently asked questions

Can RTX PRO 4000 Blackwell 24GB run Gemma 4 26B A4B?

Yes, RTX PRO 4000 Blackwell 24GB can run Gemma 4 26B A4B with a S grade (Tight fit). Expected decode speed: 91.7 tok/s.

How much VRAM does Gemma 4 26B A4B need?

Gemma 4 26B A4B (25.200000762939453B parameters) requires approximately 22.6 GB of memory with Q4_K_M quantization.

What is the best quantization for Gemma 4 26B A4B?

The recommended quantization for Gemma 4 26B A4B is Q4_K_M, which balances quality and memory efficiency.

What speed will Gemma 4 26B A4B run at on RTX PRO 4000 Blackwell 24GB?

On RTX PRO 4000 Blackwell 24GB, Gemma 4 26B A4B achieves approximately 91.7 tokens per second decode speed with a time-to-first-token of 2112ms using Q4_K_M quantization.

Can RTX PRO 4000 Blackwell 24GB run Gemma 4 26B A4B for coding?

For coding workloads, Gemma 4 26B A4B on RTX PRO 4000 Blackwell 24GB receives a S grade with 91.7 tok/s and 22K context.

What context window can Gemma 4 26B A4B use on RTX PRO 4000 Blackwell 24GB?

On RTX PRO 4000 Blackwell 24GB, Gemma 4 26B A4B can safely use up to 22K tokens of context. The model's official context limit is 256K, but available memory constrains the safe maximum.

See all results for RTX PRO 4000 Blackwell 24GB See all hardware for Gemma 4 26B A4B

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