Can Codestral 21B Pruned i1 run on RTX PRO 4000 Blackwell 24GB?

YES — Runs Great

C54Usable

Estimated from fit model

Codestral 21B Pruned i1 needs ~18.9 GB VRAM. RTX PRO 4000 Blackwell 24GB has 24.0 GB. With Q4_K_M quantization, expect ~44 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: 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) — 18.9 GB, 44.1 tok/s, Runs well

18.9 GB required24.0 GB available

79% VRAM used

Fit status

Runs well

Decode

44.1 tok/s

TTFT

4393 ms

Safe context

49K

Memory

18.9 GB / 24.0 GB

Memory breakdown

Weights12.8 GB

KV Cache2.5 GB

Runtime1.2 GB

Headroom2.4 GB

See how fast it feels

See how fast it feelsCodestral 21B Pruned i1 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: 44.1 tok/s decode · 4.4s TTFT (warm) · 110 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	C	Runs well	44.1 tok/s	2396 ms	49K
Coding	C	Runs well	44.1 tok/s	4393 ms	49K
Agentic Coding	C	Tight fit	44.1 tok/s	6390 ms	49K
Reasoning	C	Runs well	44.1 tok/s	5192 ms	49K
RAG	C	Tight fit	44.1 tok/s	7988 ms	49K

Inference speed

Codestral 21B Pruned i1 inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Codestral 21B Pruned i1 at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~94 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.

GPU / Mac	Memory	Quant	Speed (tok/s)	Fits?
RTX 5090 32GB	32 GB	Q4_K_M	93.7	Fits
RTX 4090 24GB	24 GB	Q4_K_M	59.8	Fits
RX 7900 XTX 24GB	24 GB	Q4_K_M	54.0	Fits
RTX 3090 24GB	24 GB	Q4_K_M	51.1	Fits
Mac Studio M3 Ultra 256GB	256 GB	Q4_K_M	43.5	Fits
Mac Studio M2 Ultra 128GB	128 GB	Q4_K_M	36.2	Fits
MacBook Pro M4 Max 128GB	128 GB	Q4_K_M	35.2	Fits
MacBook Pro M4 Max 64GB	64 GB	Q4_K_M	35.2	Fits
Mac Studio M1 Ultra 128GB	128 GB	Q4_K_M	34.3	Fits
RTX 4080 Super 16GB	16 GB	Q4_K_M	27.7	Heavy offload
MacBook Pro M4 Pro 48GB	48 GB	Q4_K_M	22.2	Fits
MacBook Pro M3 Max 64GB	64 GB	Q4_K_M	18.7	Fits
MacBook Pro M1 Max 64GB	64 GB	Q4_K_M	17.2	Fits
RTX 4070 12GB	12 GB	Q4_K_M	9.8	Too big
RTX 3060 12GB	12 GB	Q4_K_M	6.2	Too big
RTX 4060 8GB	8 GB	Q4_K_M	2.3	Too big

Estimates for single-stream decoding at Q4_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.

Quantization options

How Codestral 21B Pruned i1 (21B params) fits at each quantization level on RTX PRO 4000 Blackwell 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	8.2 GB	Low	C47
Q3_K_S	3	10.3 GB	Low	C49
NVFP4	4	11.8 GB	Medium	C50
Q4_K_M	4	12.8 GB	Medium	C50
Q5_K_M	5	15.1 GB	High	C49
Q6_KBest for your GPU	6	17.2 GB	High	C49
Q8_0	8	22.5 GB	Very High	F0
F16	16	43.1 GB	Maximum	F0

Get started

Copy-paste commands to run Codestral 21B Pruned i1 on your machine.

Run

lms load hf-mradermacher--codestral-21b-pruned-i1-gguf && lms server start

Upgrade-Optionen

Hardware, die Codestral 21B Pruned i1 gut ausführt

RTX 5090 32GBGünstige Wahl

32 GB VRAM (+8)1792 GB/s (+1120)

Raises estimated decode speed by about 112%.93.7 tok/s Dekodierung

Raises estimated decode speed by about 112%.

Adds memory headroom for longer context windows and future model growth.

ca. $1,999 MSRP

Frequently asked questions

Can RTX PRO 4000 Blackwell 24GB run Codestral 21B Pruned i1?

Yes, RTX PRO 4000 Blackwell 24GB can run Codestral 21B Pruned i1 with a C grade (Runs well). Expected decode speed: 44.1 tok/s.

How much VRAM does Codestral 21B Pruned i1 need?

Codestral 21B Pruned i1 (21B parameters) requires approximately 18.9 GB of memory with Q4_K_M quantization.

What is the best quantization for Codestral 21B Pruned i1?

The recommended quantization for Codestral 21B Pruned i1 is Q4_K_M, which balances quality and memory efficiency.

What speed will Codestral 21B Pruned i1 run at on RTX PRO 4000 Blackwell 24GB?

On RTX PRO 4000 Blackwell 24GB, Codestral 21B Pruned i1 achieves approximately 44.1 tokens per second decode speed with a time-to-first-token of 4393ms using Q4_K_M quantization.

Can RTX PRO 4000 Blackwell 24GB run Codestral 21B Pruned i1 for coding?

For coding workloads, Codestral 21B Pruned i1 on RTX PRO 4000 Blackwell 24GB receives a C grade with 44.1 tok/s and 49K context.

What context window can Codestral 21B Pruned i1 use on RTX PRO 4000 Blackwell 24GB?

On RTX PRO 4000 Blackwell 24GB, Codestral 21B Pruned i1 can safely use up to 49K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RTX PRO 4000 Blackwell 24GB See all hardware for Codestral 21B Pruned i1

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