Would CUDA be a better path than Intel Arc B580 12GB for Qwen 3.5 0.6B?

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.

Can Qwen 3.5 0.6B run on Intel Arc B580 12GB?

Q: What should I upgrade first if Qwen 3.5 0.6B feels slow on Intel Arc B580 12GB?

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.

YES — Runs Great

C44Usable

Estimated from fit model

Qwen 3.5 0.6B needs ~3.3 GB VRAM. Intel Arc B580 12GB has 12.0 GB. With Q4_K_M quantization, expect ~8 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: StandardBottleneck: 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) — 3.3 GB, 8.4 tok/s, Runs well

3.3 GB required12.0 GB available

27% VRAM used

Fit status

Runs well

Decode

8.4 tok/s

TTFT

23048 ms

Safe context

131K

Memory

3.3 GB / 12.0 GB

Memory breakdown

Weights0.4 GB

KV Cache0.9 GB

Runtime0.9 GB

Headroom1.2 GB

See how fast it feels

See how fast it feelsQwen 3.5 0.6B on Intel Arc B580 12GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.

When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.

Key benefits of running locally:
  - Full privacy: your prompts never leave your machine
  - No per-token cost or rate limits
  - Works offline once the model is downloaded
  - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:

  Model size     Q4 (4-bit)    Q8 (8-bit)    FP16
  7B params      ~4.3 GB       ~7.5 GB       ~14 GB
  13B params     ~7.9 GB       ~13.9 GB      ~26 GB
  70B params     ~42.7 GB      ~74.9 GB      ~140 GB

Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 8.4 tok/s decode · 23.0s TTFT (warm) · 21 tok/s prefill

What limits this setup

The raw memory story may look fine, but the software ecosystem is still a constraint here.

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

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	C	Runs well	8.4 tok/s	12571 ms	131K
Coding	C	Runs well	8.4 tok/s	23048 ms	131K
Agentic Coding	C	Runs well	8.4 tok/s	33524 ms	131K
Reasoning	C	Runs well	8.4 tok/s	27238 ms	131K
RAG	C	Runs well	8.4 tok/s	41905 ms	131K

Inference speed

Qwen 3.5 0.6B inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Qwen 3.5 0.6B at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~11 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	11.4	Fits
RTX 4090 24GB	24 GB	Q4_K_M	9.6	Fits
RTX 4080 Super 16GB	16 GB	Q4_K_M	8.4

Quantization options

How Qwen 3.5 0.6B (0.6000000238418579B params) fits at each quantization level on Intel Arc B580 12GB (12.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.2 GB	Low	C50
Q3_K_S	3	0.3 GB	Low	C50
NVFP4	4

Get started

Copy-paste commands to run Qwen 3.5 0.6B on your machine.

Run

ollama run qwen3.5:0.6b

Upgrade options

Hardware that runs Qwen 3.5 0.6B well

MacBook Pro M3 Pro 18GBBudget pick

18 GB Unified (+6)

This setup is broadly balanced for this model.8.4 tok/s decode

~$1,999 MSRP

Frequently asked questions

Can Intel Arc B580 12GB run Qwen 3.5 0.6B?

Yes, Intel Arc B580 12GB can run Qwen 3.5 0.6B with a C grade (Runs well). Expected decode speed: 8.4 tok/s.

How much VRAM does Qwen 3.5 0.6B need?

Qwen 3.5 0.6B (0.6000000238418579B parameters) requires approximately 3.3 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen 3.5 0.6B?

The recommended quantization for Qwen 3.5 0.6B is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen 3.5 0.6B run at on Intel Arc B580 12GB?

On Intel Arc B580 12GB, Qwen 3.5 0.6B achieves approximately 8.4 tokens per second decode speed with a time-to-first-token of 23048ms using Q4_K_M quantization.

Can Intel Arc B580 12GB run Qwen 3.5 0.6B for coding?

For coding workloads, Qwen 3.5 0.6B on Intel Arc B580 12GB receives a C grade with 8.4 tok/s and 131K context.

What context window can Qwen 3.5 0.6B use on Intel Arc B580 12GB?

On Intel Arc B580 12GB, Qwen 3.5 0.6B can safely use up to 131K 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 0.6B feels slow on Intel Arc B580 12GB?

See all results for Intel Arc B580 12GB See all hardware for Qwen 3.5 0.6B

Embed this result▼

Paste this snippet into any page to show a live fit card.

<iframe src="https://willitrunai.com/embed/qwen-3.5-0.6b-on-arc-b580-12gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

Preview: