willitrun·ai

Can Qwen 2.5 Coder 14B run on Mac Studio M1 Ultra 128GB?

YES — Runs Great

B61Good
Estimated from fit model

Qwen 2.5 Coder 14B needs ~26.2 GB VRAM. Mac Studio M1 Ultra 128GB has 92.2 GB. With Q4_K_M quantization, expect ~56 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) 26.2 GB, 55.6 tok/s, Runs well
26.2 GB required92.2 GB available
28% VRAM used

Fit status

Runs well

Decode

55.6 tok/s

TTFT

3479 ms

Safe context

131K

Memory

26.2 GB / 92.2 GB

Memory breakdown

Weights8.5 GB
KV Cache2.9 GB
Runtime0.9 GB
Headroom13.8 GB

See how fast it feels

See how fast it feelsQwen 2.5 Coder 14B on Mac Studio M1 Ultra 128GB
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: 55.6 tok/s decode · 3.5s TTFT (warm) · 139 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Shared-memory contention still exists

The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.

Best improvement path

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatBRuns well55.6 tok/s1898 ms131K
CodingBRuns well55.6 tok/s3479 ms131K
Agentic CodingBRuns well55.6 tok/s5061 ms131K
ReasoningBRuns well55.6 tok/s4112 ms131K
RAGBRuns well55.6 tok/s6326 ms131K

Inference speed

Qwen 2.5 Coder 14B inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Qwen 2.5 Coder 14B at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~152 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 / MacMemoryQuantSpeed (tok/s)Fits?
NVIDIARTX 5090 32GB
32 GBQ4_K_M151.8Fits
NVIDIARTX 4090 24GB
24 GBQ4_K_M96.9Fits
RX 7900 XTX 24GB
24 GBQ4_K_M87.4Fits
NVIDIARTX 3090 24GB
24 GBQ4_K_M82.9Fits
NVIDIARTX 4080 Super 16GB
16 GBQ4_K_M81.1Tight
Mac Studio M3 Ultra 256GB
256 GBQ4_K_M70.4Fits
Mac Studio M2 Ultra 128GB
128 GBQ4_K_M58.7Fits
Mac Studio M1 Ultra 128GB
128 GBQ4_K_M55.6Fits
MacBook Pro M4 Max 128GB
128 GBQ4_K_M38.3Fits
MacBook Pro M4 Max 64GB
64 GBQ4_K_M38.3Fits
MacBook Pro M3 Max 64GB
64 GBQ4_K_M30.4Fits
NVIDIARTX 4070 12GB
12 GBQ4_K_M29.1Heavy offload
MacBook Pro M1 Max 64GB
64 GBQ4_K_M27.8Fits
MacBook Pro M4 Pro 48GB
48 GBQ4_K_M23.4Fits
NVIDIARTX 3060 12GB
12 GBQ4_K_M17.0Heavy offload
NVIDIARTX 4060 8GB
8 GBQ4_K_M6.3Too 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 Qwen 2.5 Coder 14B (14B params) fits at each quantization level on Mac Studio M1 Ultra 128GB (92.2 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
5.5 GB
LowC54
Q3_K_S
3
6.9 GB
LowC54
NVFP4
4
7.8 GB
MediumC54
Q4_K_M
4
8.5 GB
MediumC54
Q5_K_M
5
10.1 GB
HighC54
Q6_K
6
11.5 GB
HighC54
Q8_0
8
15.0 GB
Very HighC54
F16Best for your GPU
16
28.7 GB
MaximumB56

Get started

Copy-paste commands to run Qwen 2.5 Coder 14B on your machine.

Run

ollama run qwen2.5-coder:14b

Opções de upgrade

Hardware que roda bem Qwen 2.5 Coder 14B

Frequently asked questions

Can Mac Studio M1 Ultra 128GB run Qwen 2.5 Coder 14B?

Yes, Mac Studio M1 Ultra 128GB can run Qwen 2.5 Coder 14B with a B grade (Runs well). Expected decode speed: 55.6 tok/s.

How much VRAM does Qwen 2.5 Coder 14B need?

Qwen 2.5 Coder 14B (14B parameters) requires approximately 26.2 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen 2.5 Coder 14B?

The recommended quantization for Qwen 2.5 Coder 14B is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen 2.5 Coder 14B run at on Mac Studio M1 Ultra 128GB?

On Mac Studio M1 Ultra 128GB, Qwen 2.5 Coder 14B achieves approximately 55.6 tokens per second decode speed with a time-to-first-token of 3479ms using Q4_K_M quantization.

Can Mac Studio M1 Ultra 128GB run Qwen 2.5 Coder 14B for coding?

For coding workloads, Qwen 2.5 Coder 14B on Mac Studio M1 Ultra 128GB receives a B grade with 55.6 tok/s and 131K context.

What context window can Qwen 2.5 Coder 14B use on Mac Studio M1 Ultra 128GB?

On Mac Studio M1 Ultra 128GB, Qwen 2.5 Coder 14B can safely use up to 131K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

Is unified memory on Mac Studio M1 Ultra 128GB as fast as VRAM for Qwen 2.5 Coder 14B?

Not always. Mac Studio M1 Ultra 128GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.

See all results for Mac Studio M1 Ultra 128GBSee all hardware for Qwen 2.5 Coder 14B
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