M4 Pro vs M4 Max for LLMs: When Does Max Make Sense?

Both M4 Pro and M4 Max power MacBook Pro and Mac Studio configurations. The M4 Max costs significantly more but offers higher memory bandwidth and more GPU cores. For local AI, the question is whether those extras translate to meaningful performance gains, or if M4 Pro is already enough.

Hardware5 categories compared

Verdict

Tie

M4 Max delivers 40-60% faster inference than M4 Pro on the same model, thanks to 2x memory bandwidth and more GPU cores. It is worth the upgrade only if you regularly run 30B+ models or need maximum speed. For 7B-14B models, M4 Pro is more than sufficient.

Apple M4 Pro

wins

Ties

draws

Apple M4 Max

wins

Category-by-Category Breakdown

Category	Apple M4 Pro	Apple M4 Max	Winner
Memory Bandwidth	273 GB/s	546 GB/s	Apple M4 Max
Max RAM	Up to 48 GB	Up to 128 GB	Apple M4 Max
GPU Cores	20 GPU cores	40 GPU cores	Apple M4 Max
Price	Starting around $2,000 (MacBook Pro)	Starting around $3,500 (MacBook Pro)	Apple M4 Pro
Speed on 7B Models	~30 tok/s, fast enough	~50 tok/s, noticeably snappier	Apple M4 Max

Detailed Analysis

Memory Bandwidth

Apple M4 Max

M4 Max has exactly double the memory bandwidth of M4 Pro. Since LLM inference is memory-bandwidth-bound, this directly translates to faster token generation.

Apple M4 Pro

273 GB/s

Apple M4 Max

546 GB/s

Max RAM

Apple M4 Max

M4 Max supports 128 GB, enabling 70B models that cannot fit on M4 Pro. This is the biggest practical difference for large model users.

Apple M4 Pro

Up to 48 GB

Apple M4 Max

Up to 128 GB

GPU Cores

Apple M4 Max

Twice the GPU cores means faster prompt processing and parallel workloads. The impact on pure token generation is less than memory bandwidth.

Apple M4 Pro

20 GPU cores

Apple M4 Max

40 GPU cores

Price

Apple M4 Pro

M4 Pro is $1,500+ cheaper. For 7B-14B models, the performance is already excellent, making the extra cost hard to justify.

Apple M4 Pro

Starting around $2,000 (MacBook Pro)

Apple M4 Max

Starting around $3,500 (MacBook Pro)

Speed on 7B Models

Apple M4 Max

M4 Max is faster even on small models, but 30 tok/s from M4 Pro is already real-time for chat. The difference matters more for batch processing.

Apple M4 Pro

~30 tok/s, fast enough

Apple M4 Max

~50 tok/s, noticeably snappier

Frequently Asked Questions

Is M4 Max worth it just for AI workloads?

Only if you run 30B+ models regularly. For 7B-14B models, M4 Pro is fast enough. The M4 Max is worth it if you also benefit from the extra GPU and memory for video editing or 3D work.

Can M4 Pro run 70B models?

No. M4 Pro maxes out at 48 GB RAM, which is not enough for 70B Q4 models (need ~42 GB load + OS overhead). You need M4 Max with 64 GB+ for 70B.

How much faster is M4 Max for inference?

Roughly 40-60% faster on equivalent models, primarily due to 2x memory bandwidth. On a 14B model, expect around 40 tok/s on M4 Max vs 25 tok/s on M4 Pro.