Can Nous Hermes 1.0 run on MacBook Pro M3 Pro 18GB?

NO — Won't Fit

F0Won't run
Estimated from fit model

Nous Hermes 1.0 needs ~20.5 GB but MacBook Pro M3 Pro 18GB only has 13.0 GB. Try a smaller quantization or lighter model.

Runtime: llama.cppCapacity: No fitBandwidth: Very lowStack: StandardBottleneck: Memory capacity
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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) 20.5 GB, exceeds 13.0 GB available
20.5 GB required13.0 GB available
158% VRAM needed

7.5 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

11.0 tok/s

TTFT

17664 ms

Safe context

6K

Memory

20.5 GB / 13.0 GB

Offload

40%

Memory breakdown

Weights5.5 GB
KV Cache12.2 GB
Runtime0.9 GB
Headroom1.9 GB

See how fast it feels

With memory offload — actual speed may be lower
See how fast it feelsNous Hermes 1.0 on MacBook Pro M3 Pro 18GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step. Given information: - Speed = 60 mph (miles per hour) - Time = 2.5 hours Formula: Distance = Speed x Time Calculation: Distance = 60 mph x 2.5 h = 150 miles The train travels 150 miles. Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time. Breakdown: - First half: 1.25 hours at 60 mph = 75 miles - Stop: 20 minutes (no distance) - Second half: 1.25 hours at 60 mph = 75 miles Total distance: 150 miles (same) Total time: 2.5 h + 0.33 h = 2.83 hours Average speed: 150 / 2.83 = 53 mph The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 11.0 tok/s decode · 17.7s TTFT (warm) · 27 tok/s prefill

What limits this setup

Usable shared or unified memory is the main blocker for this model.

Not enough usable memory

The model needs 20.5 GB, but this setup only exposes 13.0 GB of usable shared or unified memory.

Best improvement path

Move to a larger memory pool

A larger unified-memory SKU or a discrete high-bandwidth GPU is the cleanest way to make this model practical.

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatBVery compromised (needs ~0.6 GB host RAM)16.7 tok/s6314 ms6K
CodingFToo heavy11.0 tok/s17664 ms6K
Agentic CodingFToo heavy9.0 tok/s31375 ms6K
ReasoningFToo heavy11.0 tok/s20876 ms6K
RAGFToo heavy9.0 tok/s39218 ms6K

Quantization options

How Nous Hermes 1.0 (9B params) fits at each quantization level on MacBook Pro M3 Pro 18GB (13.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
3.5 GB
LowB70
Q3_K_S
3
4.4 GB
LowA71
NVFP4
4
5.0 GB
MediumA72
Q4_K_M
4
5.5 GB
MediumA72
Q5_K_M
5
6.5 GB
HighA73
Q6_K
6
7.4 GB
HighA72
Q8_0Best for your GPU
8
9.6 GB
Very HighA72
F16
16
18.5 GB
MaximumF0

アップグレードオプション

Nous Hermes 1.0を快適に動かすハードウェア

Frequently asked questions

Can MacBook Pro M3 Pro 18GB run Nous Hermes 1.0?

No, Nous Hermes 1.0 requires more memory than MacBook Pro M3 Pro 18GB provides.

How much VRAM does Nous Hermes 1.0 need?

Nous Hermes 1.0 (9B parameters) requires approximately 20.5 GB of memory with Q4_K_M quantization.

What is the best quantization for Nous Hermes 1.0?

The recommended quantization for Nous Hermes 1.0 is Q4_K_M, which balances quality and memory efficiency.

What speed will Nous Hermes 1.0 run at on MacBook Pro M3 Pro 18GB?

On MacBook Pro M3 Pro 18GB, Nous Hermes 1.0 achieves approximately 11.0 tokens per second decode speed with a time-to-first-token of 17664ms using Q4_K_M quantization.

Can MacBook Pro M3 Pro 18GB run Nous Hermes 1.0 for coding?

For coding workloads, Nous Hermes 1.0 on MacBook Pro M3 Pro 18GB receives a F grade with 11.0 tok/s and 6K context.

What context window can Nous Hermes 1.0 use on MacBook Pro M3 Pro 18GB?

On MacBook Pro M3 Pro 18GB, Nous Hermes 1.0 can safely use up to 6K tokens of context. The model's official context limit is 16K, but available memory constrains the safe maximum.

What should I upgrade first if Nous Hermes 1.0 feels slow on MacBook Pro M3 Pro 18GB?

Move to a larger memory pool. A larger unified-memory SKU or a discrete high-bandwidth GPU is the cleanest way to make this model practical.

Is unified memory on MacBook Pro M3 Pro 18GB as fast as VRAM for Nous Hermes 1.0?

Not always. MacBook Pro M3 Pro 18GB 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 MacBook Pro M3 Pro 18GBSee all hardware for Nous Hermes 1.0
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