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URL: https://willitrunai.com/can-run/yi-1.5-6b-on-m3-24gb


Can Yi 1.5 6B run on MacBook Pro M3 24GB?

YES — Runs Great

C47Usable
Estimated from fit model

Yi 1.5 6B needs ~8.1 GB VRAM. MacBook Pro M3 24GB has 17.3 GB. With Q4_K_M quantization, expect ~19 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: Very lowStack: StandardBottleneck: Memory bandwidth
Share:

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) — 8.1 GB, 20.2 tok/s, Runs well
8.1 GB required17.3 GB available
47% VRAM used

Fit status

Runs well

Decode

20.2 tok/s

TTFT

9582 ms

Safe context

4K

Memory

8.1 GB / 17.3 GB

Memory breakdown

Weights3.7 GB
KV Cache1.0 GB
Runtime0.9 GB
Headroom2.6 GB

See how fast it feels

See how fast it feelsYi 1.5 6B on MacBook Pro M3 24GB
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: 20.2 tok/s decode · 9.6s TTFT (warm) · 51 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Shared-memory contention still exists

The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.

Best improvement path

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatCRuns well18.6 tok/s5684 ms4K
CodingCRuns well18.6 tok/s10420 ms4K
Agentic CodingCRuns well20.2 tok/s13937 ms4K
ReasoningCRuns well18.6 tok/s12315 ms4K
RAGCRuns well20.2 tok/s17422 ms4K

Quantization options

How Yi 1.5 6B (6B params) fits at each quantization level on MacBook Pro M3 24GB (17.3 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
2.3 GB
LowC46
Q3_K_S
3
2.9 GB
LowC46
NVFP4
4

Get started

Copy-paste commands to run Yi 1.5 6B on your machine.

Run

lms load Yi-1.5-6B-Chat && lms server start

Upgrade options

Hardware that runs Yi 1.5 6B well

MacBook Pro M2 Max 32GBBudget pick
32 GB Unified (+8)400 GB/s (+300)
C
Raises estimated decode speed by about 241%.68.9 tok/s decode

Raises estimated decode speed by about 241%.

Adds memory headroom for longer context windows and future model growth.

~$1,999 MSRP

MacBook Pro M2 Pro 32GBBest value
32 GB Unified (+8)200 GB/s (+100)
C
Raises estimated decode speed by about 106%.41.6 tok/s decode

Raises estimated decode speed by about 106%.

Adds memory headroom for longer context windows and future model growth.

~$1,999 MSRP

MacBook Pro M1 Pro 32GBApple upgrade
32 GB Unified (+8)200 GB/s (+100)
C
Raises estimated decode speed by about 91%.38.6 tok/s decode

Raises estimated decode speed by about 91%.

Adds memory headroom for longer context windows and future model growth.

~$1,999 MSRP

Frequently asked questions

See all results for MacBook Pro M3 24GBSee all hardware for Yi 1.5 6B
3.4 GB
Medium
C47
Q4_K_M
4
3.7 GB
MediumC47
Q5_K_M
5
4.3 GB
HighC47
Q6_K
6
4.9 GB
HighC48
Q8_0
8
6.4 GB
Very HighC49
F16Best for your GPU
16
12.3 GB
MaximumC50