Apple192 GB VRAM800 GB/s$0/hr

Qwen 3 32B on Mac M2 Ultra (192GB unified): Does It Fit, How Fast, What It Costs

Qwen 3 32B at FP8 (E4M3) needs 32.0 GB for its weights and 49.2 GB in total at 8K context with 8 concurrent users. That means it fits on a single Mac M2 Ultra (192GB unified). Every figure is computed by tokcalc's open-source capacity model.

Fits?
Yes, 1 GPU
49.2 GB needed / 192 GB available
Decode speed
24.38
tok/s per stream
Aggregate
210.9
tok/s @ 8 concurrent
Cost / 1M tokens
—
1× Mac M2 Ultra (192GB unified) · quote required
What changes as you add Mac M2 Ultra (192GB unified)s
Tensor-parallel degree vs VRAM, throughput, and cost. Cost scales linearly with GPU count; decode throughput scales near-linearly too, so cost per token stays roughly flat.
GPUsTotal VRAMVRAM neededDecode tok/sAggregate tok/sTTFTCost / 1M tokFits?
1× Mac192 GB49.2 GB24.38210.938.91 s—✓
2× Mac384 GB49.2 GB41.44843.819.47 s—✓
4× Mac768 GB49.2 GB82.8833759.75 s—✓
8× Mac1536 GB49.2 GB165.8135004.89 s—✓
Concurrency vs context length
On 1× Mac M2 Ultra (192GB unified) at FP8 (E4M3). KV cache scales linearly with context, so this is the number of users your GPUs can actually serve.
ContextConcurrent usersKV per requestFits?
4K1491.07 GB✓ fits
8K742.15 GB✓ fits
33K188.59 GB✓ fits
66K917.18 GB✓ fits
131K434.36 GB✓ fits
Other GPUs that run Qwen 3 32B
Same workload, same quantization — ranked by value (tokens per dollar-hour).
GPUGPUsAggregate tok/sCost / 1M tok
RTX 5090 32GB2×2228$0.1247
AMD MI300X 192GB1×1938$0.3584
L40S 48GB2×1074$0.3621
AMD MI325X 288GB1×2194$0.4432
A100 80GB SXM41×731.3$0.4558
Intel Gaudi 3 128GB1×1207$0.4604
Frequently asked questions

Can Qwen 3 32B run on Mac M2 Ultra (192GB unified)?

Yes. Qwen 3 32B at FP8 (E4M3) needs 49.2 GB including the KV cache, and Mac M2 Ultra (192GB unified) has 192 GB — so it fits on a single GPU.

How fast is Qwen 3 32B on Mac M2 Ultra (192GB unified)?

24.38 tokens/sec per stream and 210.9 tok/s aggregate with continuous batching at 8 concurrent users. Time to first token is 38.91 s, and inter-token latency is 41.0 ms.

What does Qwen 3 32B on Mac M2 Ultra (192GB unified) cost per million tokens?

— per 1M output tokens at 1× Mac M2 Ultra (192GB unified). That is the marginal hardware cost — add idle capacity, ops, and egress for the real figure.

How much VRAM does Qwen 3 32B need on Mac M2 Ultra (192GB unified)?

32.0 GB for the weights at FP8 (E4M3), plus 17.2 GB of KV cache for 8 concurrent requests at 8K context — 49.2 GB total. Every extra concurrent user at long context costs more, so leave headroom.

Is Mac M2 Ultra (192GB unified) the right choice for Qwen 3 32B?

It works. Compare — per 1M tokens against the alternatives below — the cheapest option that fits the same workload is 8× RTX 3080 10GB at $0.0294, and the fastest is 2× Cerebras CS-3 (WSE-3) at 24863 tok/s.

Adjust the workload yourself

Same formulas, your context length, concurrency, and quantisation.

Open in calculator