Does Llama 3.3 70B fit on a Mac Studio M5 Max 36 GB?

No. At the smallest quantization we list it still needs about 43 GB against roughly 31 GB usable.

How fast is Llama 3.3 70B on a Mac Studio M5 Max 36 GB?

We estimate — of decode throughput. This is calculated from memory bandwidth and active parameter count, not measured, so it is shown as a range.

What does it cost to run Llama 3.3 70B on a Mac Studio M5 Max 36 GB?

The default US federal estimate is about $28 per month as a C corporation at 8 hours a day, including depreciation, electricity and tax relief. Use the selector for an interactive country estimate.

Llama 3.3 70B on Mac Studio M5 Max 36 GB

70.554B on 36 GB at 614 GB/s. Hardware details · Model details

Country

Buyer

Usage

CompatibilityDoes not fit

Fits

Calculated Requires more than 97% of usable memory. Needs a smaller quantization or more memory.

Recommended quantization

MLX 4-bit

Calculated mlx

Memory required

43.1 GB

Calculated of 30.6 GB usable — 141%

Max practical context

Calculated model supports 128K

Memory budget at 8K context

Model weights ⓘ

38.4 GB Calculated

KV cache ⓘ

2.5 GB Calculated

Runtime overhead ⓘ

2.2 GB Estimated

Total required

43.1 GB Calculated

Usable memory ⓘ

30.6 GB Assumption

Headroom

-12.5 GB Calculated

No quantization in our catalogue fits this machine.

Unified memory: weights, KV cache and the OS share the same 36 GB pool. We assume 85% is addressable by the GPU, which matches a headless machine with the wired-memory limit raised.

PerformanceEstimated0/10

Decode (generation)

—

Estimated calculated, not measured

Prefill (prompt)

—

Estimated

TTFT at 8K

~24.0–49.8 s

Estimated time to first token

Power while generating

105 W

Measured

No throughput figures for this pairing. We do not estimate performance for a model that cannot load: a tokens-per-second number for a configuration that will never run is noise, not data. The alternatives below are machines that can actually run Llama 3.3 70B.

How the estimate is calculated

Decode: reading 70.6B active parameters at 4.50 bits/weight takes 73.76 ms at 614 GB/s x 88% achieved efficiency.
Prefill: 96 TFLOPS (FP16) x 1.69 calibrated against measured prefill on this platform x 22% assumed model-FLOPs utilisation, divided by 2 x 70.6B parameters per token.

Prefill throughput is highly engine-dependent. Flash attention, batch size and quantized KV all move this number substantially, and for sparse mixture-of-experts models it is the least reliable figure we produce.
This is a calculated estimate, not a measurement. It assumes a single request, a short prompt, no speculative decoding and a warm model already resident in memory.

Estimator version estimator_v1. Stored with every estimated row so old estimates can be regenerated when the model improves.

This model at other quantizations on this machine

Quantization	Weights	Total needed	Utilisation	Fit
`MLX 4-bit`recommended	38.4 GB	43.1 GB	141%	Does not fit
`Q4_K_M`	41.0 GB	45.8 GB	150%	Does not fit
`Q8_0`	71.2 GB	76.8 GB	251%	Does not fit
`BF16`	131.4 GB	138.9 GB	454%	Does not fit

Cost of running Llama 3.3 70B on this machineUnited States (federal) · C corporation · 8h/day

Monthly economic cost

$28

Calculated after tax

Codex/Claude Code

$100/mo

≈ $100/mo · local is $72 less

Net cash at purchase

$2,702

Calculated VAT not reclaimable

Total over 5 years

$1,706

Calculated after tax, after resale

Cost per USD/1M tokens

—

Calculated

The $100 comparison uses the Codex Pro 5x / Claude Max 5x plans. A fixed planning conversion is used for USD. This compares monthly spend only: subscriptions have usage limits, local hardware has different capabilities and constraints, and taxes or regional pricing may change the charged amount. Prices checked 7 September 2026.

Monthly breakdown

Depreciation 1,891 over 5 years, straight-line to a 810 residual	$31.52
Electricity 4.7 kWh/month at 0.140/kWh	$0.66
Cost of capital 4.0%/yr on 1,756 average capital employed	$5.85
Monthly cost before tax	$38.03
Electricity tax shield Running costs are deductible business expenses	−$0.14
First-year expensing §179 (100.0%)	−$9.46
Monthly economic cost after tax	$28.43

Three different numbers, deliberately

Cash cost

$2,702

Money that leaves the bank account on day one, net of reclaimable VAT.

Accounting depreciation

$31.52/month

$1,891 written down over 5 years to a $810 residual.

After-tax economic cost

$28.43/month

Depreciation plus running costs plus cost of capital, less the tax those deductions save. This is the figure to compare between machines.

Assumptions and sources (verified 2026-09-07)

VAT rate

0% Official spec

VAT recoverable

0% Official spec

Federal C-corporation estimate at the flat 21% rate. Pass-through entities should use the sole-proprietor estimate as a rougher proxy.

Effective deduction rate

21.00% Calculated

Headline marginal rate 21.00%.

Depreciation

5 years, straight-line Assumption

Residual value

$810 (30%) Assumption

Extrapolated from the three-year curve.

Electricity

$0.140/kWh Assumption

Average power draw

27 W Calculated

Load 105 W for 20% of powered hours, idle 7 W for the rest — a machine that is on is not generating tokens the whole time.

Investment allowances

§179 100.0% Official spec

Worth $567 in total — first-year expensing that replaces later tax depreciation.

Cost of capital

$5.85/month Assumption

VAT rate: No US federal VAT · verified 2026-09-07
Marginal tax rate: IRS Publication 542 — Corporations · verified 2026-09-07
VAT recoverable fraction: site assumption · verified 2026-09-07
Useful life: IRS Publication 946 — How To Depreciate Property · verified 2026-09-07
Electricity price: Site assumption · verified 2026-09-07

Federal planning estimate only, not tax advice. State and local income tax, sales/use tax and incentives are excluded. It assumes 100% business use, a Section 179 election, enough business income to use it, and that the full annual limit remains available.

Llama 3.3 70B on other hardware

Hardware	Decode	Price	Fit
Dual RTX 5090 workstation (2x 32 GB)	~38.4–55.2 t/s	€6.499	Comfortable
Quad RTX 5090 workstation (4x 32 GB)	~32.3–46.4 t/s	€13.999	Comfortable
RTX PRO 6000 Blackwell workstation (96 GB)	~24.9–35.8 t/s	€11.499	Comfortable
RTX PRO 6000 Max-Q workstation (96 GB, 300 W)	~24.9–35.8 t/s	€11.999	Comfortable
Mac Studio M5 Ultra 96 GB	~19.7–28.3 t/s	€6.599	Comfortable
Mac Studio M5 Ultra 512 GB	~11.3–16.3 t/s	€12.599	Comfortable

Nearest alternatives to the Mac Studio M5 Max 36 GB

Llama 3.3 70B on Mac Studio M5 Max 64 GB64 GB Llama 3.3 70B on Mac Studio M5 Max 128 GB128 GB Llama 3.3 70B on Mac Studio M5 Ultra 96 GB96 GB Llama 3.3 70B on Mac Studio M5 Ultra 256 GB256 GB Llama 3.3 70B on Mac Studio M5 Ultra 512 GB512 GB

Compare Mac Studio M5 Max 36 GB against Mac Studio M5 Max 64 GB →

Page quality score (why this page is or is not indexed)

6/13 — marked noindex. Generated pages are gated so we do not ask a search engine to rank a page with nothing computed to say. The directive is emitted in the page head via the metadata API, not in the body, so it is authoritative.

Has a memory-fit calculation (+3)
Has a price (+2)
Has an ownership economics calculation (+2)
Well connected (18 internal links) (+1)
No benchmark or estimate
Model does not fit and there is no measurement to explain why it is worth knowing (-2)
Fails a hard requirement: an indexable page needs both a compatibility calculation and at least one benchmark or estimate.