Can Qwen 3.5 35B A3B run on Intel Arc B580 12GB?

NO — Won't Fit

F0Won't run

Estimated from fit model

Qwen 3.5 35B A3B needs ~24.9 GB but Intel Arc B580 12GB only has 12.0 GB. Try a smaller quantization or lighter model.

Runtime: llama.cppCapacity: No fitBandwidth: MediumStack: StandardBottleneck: Memory capacity

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) — 24.9 GB, exceeds 12.0 GB available

24.9 GB required12.0 GB available

207% VRAM needed

12.9 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

5.2 tok/s

TTFT

37148 ms

Safe context

Memory

24.9 GB / 12.0 GB

Offload

50%

Memory breakdown

Weights21.3 GB

KV Cache1.5 GB

Runtime0.9 GB

Headroom1.2 GB

See how fast it feels

With memory offload — actual speed may be lower

See how fast it feelsQwen 3.5 35B A3B on Intel Arc B580 12GB
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: 5.2 tok/s decode · 37.1s TTFT (warm) · 13 tok/s prefill

What limits this setup

Usable VRAM is the main blocker for this model.

Not enough usable memory

The model needs 24.9 GB, but this setup only exposes 12.0 GB of usable VRAM.

Runtime ecosystem is narrower than CUDA

Intel GPUs can look attractive on memory per dollar, but local AI tooling, kernels, and model coverage are still broader and easier on CUDA today.

Best improvement path

Add more VRAM headroom

The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.

Prefer CUDA if you want the path of least resistance

If your goal is maximum runtime coverage, easier troubleshooting, and better support for new local AI releases, CUDA is usually still the safer upgrade path.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	F	Too heavy	5.5 tok/s	19066 ms	4K
Coding	F	Too heavy	5.2 tok/s	37148 ms	4K
Agentic Coding	F	Too heavy	4.6 tok/s	60713 ms	4K
Reasoning	F	Too heavy	5.2 tok/s	43903 ms	4K
RAG	F	Too heavy	4.6 tok/s	75891 ms	4K

Quantization options

How Qwen 3.5 35B A3B (35B params) fits at each quantization level on Intel Arc B580 12GB (12.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	F0
Q3_K_S	3	17.2 GB	Low	F0
NVFP4	4	19.6 GB	Medium	F0
Q4_K_M	4	21.3 GB	Medium	F0
Q5_K_M	5	25.2 GB	High	F0
Q6_K	6	28.7 GB	High	F0
Q8_0	8	37.5 GB	Very High	F0
F16	16	71.8 GB	Maximum	F0

Opciones de mejora

Hardware que ejecuta bien Qwen 3.5 35B A3B

Intel Arc Pro B60 24GBMejor relación calidad-precio

24 GB VRAM (+12)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.21.9 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Sube la velocidad estimada de decodificación alrededor de un 321%.

~$599 MSRP

NVIDIA A100 40GBMayor salto

40 GB VRAM (+28)1555 GB/s (+1099)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.180.5 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.

~$10,000 MSRP

Intel Data Center GPU Max 1550 128GBOpción económica

128 GB VRAM (+116)3200 GB/s (+2744)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.278.6 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.

~$15,000 MSRP

Gaudi 3 128GBMejora Intel

128 GB VRAM (+116)3700 GB/s (+3244)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.357.9 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.

~$15,000 MSRP

Frequently asked questions

Can Intel Arc B580 12GB run Qwen 3.5 35B A3B?

No, Qwen 3.5 35B A3B requires more memory than Intel Arc B580 12GB provides.

How much VRAM does Qwen 3.5 35B A3B need?

Qwen 3.5 35B A3B (35B parameters) requires approximately 24.9 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen 3.5 35B A3B?

The recommended quantization for Qwen 3.5 35B A3B is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen 3.5 35B A3B run at on Intel Arc B580 12GB?

On Intel Arc B580 12GB, Qwen 3.5 35B A3B achieves approximately 5.2 tokens per second decode speed with a time-to-first-token of 37148ms using Q4_K_M quantization.

Can Intel Arc B580 12GB run Qwen 3.5 35B A3B for coding?

For coding workloads, Qwen 3.5 35B A3B on Intel Arc B580 12GB receives a F grade with 5.2 tok/s and 4K context.

What context window can Qwen 3.5 35B A3B use on Intel Arc B580 12GB?

On Intel Arc B580 12GB, Qwen 3.5 35B A3B can safely use up to 4K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

What should I upgrade first if Qwen 3.5 35B A3B feels slow on Intel Arc B580 12GB?

Add more VRAM headroom. The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.

Would CUDA be a better path than Intel Arc B580 12GB for Qwen 3.5 35B A3B?

Often yes, if your goal is the easiest setup and the widest runtime support. Intel can offer attractive memory capacity, but CUDA still tends to win on tooling maturity, guides, kernels, and model coverage for local AI.

See all results for Intel Arc B580 12GB See all hardware for Qwen 3.5 35B A3B

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