Can Phi-4-reasoning-plus 14B run on Mac mini M2 24GB?

YES — Tight Fit

S86Excellent

Estimated from fit model

Phi-4-reasoning-plus 14B needs ~15.5 GB VRAM. Mac mini M2 24GB has 17.3 GB. With Q4_K_M quantization, expect ~8 tok/s.

Runtime: llama.cppCapacity: TightBandwidth: Very lowStack: StandardBottleneck: Memory bandwidth

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) — 15.5 GB, 7.8 tok/s, Tight fit

15.5 GB required17.3 GB available

90% VRAM used

Fit status

Tight fit

Decode

7.8 tok/s

TTFT

24845 ms

Safe context

25K

Memory

15.5 GB / 17.3 GB

Memory breakdown

Weights9.0 GB

KV Cache3.1 GB

Runtime0.9 GB

Headroom2.6 GB

See how fast it feels

See how fast it feelsPhi-4-reasoning-plus 14B on Mac mini M2 24GB
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: 7.8 tok/s decode · 24.8s TTFT (warm) · 20 tok/s prefill

What limits this setup

The model fits in shared memory, but shared-memory bandwidth is now the real limiter.

Fit does not mean dedicated-VRAM speed

Unified or shared memory can make a model technically fit, but sustained tokens per second may still trail a discrete high-bandwidth GPU with less total memory.

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

Prioritize bandwidth, not only capacity

If this workload feels slow, the next useful step is often a GPU tier with materially faster memory bandwidth rather than only a small bump in capacity.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	S	Runs well	7.8 tok/s	13552 ms	25K
Coding	S	Tight fit	7.8 tok/s	24845 ms	25K
Agentic Coding	A	Runs with offload (needs ~0.6 GB host RAM)	6.9 tok/s	40968 ms	25K
Reasoning	S	Tight fit	7.8 tok/s	29362 ms	25K
RAG	A	Runs with offload (needs ~0.6 GB host RAM)	6.9 tok/s	51210 ms	25K

Inference speed

Phi-4-reasoning-plus 14B inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Phi-4-reasoning-plus 14B at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~144 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	143.9	Fits
RTX 4090 24GB	24 GB	Q4_K_M	91.8	Fits
RX 7900 XTX 24GB	24 GB	Q4_K_M	82.9	Fits
RTX 3090 24GB	24 GB	Q4_K_M	78.5	Fits
RTX 4080 Super 16GB	16 GB	Q4_K_M	75.5	Tight
Mac Studio M3 Ultra 256GB	256 GB	Q4_K_M	66.8	Fits
Mac Studio M2 Ultra 128GB	128 GB	Q4_K_M	55.6	Fits
Mac Studio M1 Ultra 128GB	128 GB	Q4_K_M	52.7	Fits
MacBook Pro M4 Max 128GB	128 GB	Q4_K_M	37.6	Fits
MacBook Pro M4 Max 64GB	64 GB	Q4_K_M	37.6	Fits
MacBook Pro M3 Max 64GB	64 GB	Q4_K_M	28.8	Fits
MacBook Pro M1 Max 64GB	64 GB	Q4_K_M	26.4	Fits
RTX 4070 12GB	12 GB	Q4_K_M	24.9	Heavy offload
MacBook Pro M4 Pro 48GB	48 GB	Q4_K_M	23.0	Fits
RTX 3060 12GB	12 GB	Q4_K_M	14.6	Heavy offload
RTX 4060 8GB	8 GB	Q4_K_M	5.5	Too big

Estimates for single-stream decoding at Q4_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.

Quantization options

How Phi-4-reasoning-plus 14B (14.699999809265137B params) fits at each quantization level on Mac mini M2 24GB (17.3 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.7 GB	Low	S88
Q3_K_S	3	7.2 GB	Low	S90
NVFP4	4	8.2 GB	Medium	S91
Q4_K_M	4	9.0 GB	Medium	S91
Q5_K_M	5	10.6 GB	High	S91
Q6_KBest for your GPU	6	12.1 GB	High	S90
Q8_0	8	15.7 GB	Very High	F0
F16	16	30.1 GB	Maximum	F0

Get started

Copy-paste commands to run Phi-4-reasoning-plus 14B on your machine.

Run

ollama run phi4-reasoning

Your hardware

More models your Mac mini M2 24GB can run

Model	Params	Grade	Decode	Capabilities
Magistral Small 2507	24B	B	3.7 tok/s
Devstral Small 2 24B Instruct	24B	B	3.7 tok/s

Frequently asked questions

Can Mac mini M2 24GB run Phi-4-reasoning-plus 14B?

Yes, Mac mini M2 24GB can run Phi-4-reasoning-plus 14B with a S grade (Tight fit). Expected decode speed: 7.8 tok/s.

How much VRAM does Phi-4-reasoning-plus 14B need?

Phi-4-reasoning-plus 14B (14.699999809265137B parameters) requires approximately 15.5 GB of memory with Q4_K_M quantization.

What is the best quantization for Phi-4-reasoning-plus 14B?

The recommended quantization for Phi-4-reasoning-plus 14B is Q4_K_M, which balances quality and memory efficiency.

What speed will Phi-4-reasoning-plus 14B run at on Mac mini M2 24GB?

On Mac mini M2 24GB, Phi-4-reasoning-plus 14B achieves approximately 7.8 tokens per second decode speed with a time-to-first-token of 24845ms using Q4_K_M quantization.

Can Mac mini M2 24GB run Phi-4-reasoning-plus 14B for coding?

For coding workloads, Phi-4-reasoning-plus 14B on Mac mini M2 24GB receives a S grade with 7.8 tok/s and 25K context.

What context window can Phi-4-reasoning-plus 14B use on Mac mini M2 24GB?

On Mac mini M2 24GB, Phi-4-reasoning-plus 14B can safely use up to 25K tokens of context. The model's official context limit is 33K, but available memory constrains the safe maximum.

What should I upgrade first if Phi-4-reasoning-plus 14B feels slow on Mac mini M2 24GB?

Prioritize bandwidth, not only capacity. If this workload feels slow, the next useful step is often a GPU tier with materially faster memory bandwidth rather than only a small bump in capacity.

Is unified memory on Mac mini M2 24GB as fast as VRAM for Phi-4-reasoning-plus 14B?

Not always. Mac mini M2 24GB 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 Mac mini M2 24GB See all hardware for Phi-4-reasoning-plus 14B

Embed this result▼

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

<iframe src="https://willitrunai.com/embed/phi-4-reasoning-plus-14b-on-m2-24gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

Preview: