M5 Max 128GB vs M5 Pro 64GB for local LLMs
48 reports on the M5 Max 128GB and 16 on the M5 Pro 64GB
Which is faster for local LLMs?
On Qwen3 30B · 3.3B active at 4-bit, the M5 Max 128GB has 144.4 generation tokens/s (one run); the M5 Pro 64GB has 98.2 generation tokens/s (one run). Those are community reports whose engines and settings differ, so the gap is a rough sign, not a controlled measure of the two cards. Memory bandwidth, which caps how fast a card can write, is 2.0x higher on the M5 Max 128GB (614 GB/s on the M5 Max 128GB, 307 on the M5 Pro 64GB).
- Memory
- 128GB unified
- Memory bandwidth
- 614 GB/s
- FP16 compute
- not on record
- Reports
- 48
- Memory
- 64GB unified
- Memory bandwidth
- 307 GB/s
- FP16 compute
- not on record
- Reports
- 16
Measured on both
Generation and prompt processing speeds from plain runs (one device, one request, no speculative decoding, the whole model in the device's memory) of the same model size at the same bit class. Each side shows the engines and reported context behind its median. Context can mean a configured window or prompt depth, so these are community comparisons with differing settings. How to read these
| Model | M5 Max 128GB | M5 Pro 64GB |
|---|---|---|
| Qwen3 30B · 3.3B active4-bit | 144.4one runMLXcontext not stated | 98.2one runMLXcontext not stated |
Estimated by the calculator
The quant the calculator recommends for each card and its estimated speed at a 32,768-token context with 32 GB of system RAM, from memory bandwidth and the model's shape. Where a model was also measured above, the measurement wins.
| Model | M5 Max 128GB | M5 Pro 64GB |
|---|---|---|
| Qwen3 30B · 3.3B active | 28.9 t/sFP16 | 31.1 t/sQ8_0 |
| Qwen3.8 27B | 9.0 t/sFP16 | 9.7 t/sQ8_0 |
| Qwen3.8 125B · 6B active | 41.2 t/sQ5_K_S | 44.2 t/sQ2_K |
| Qwen3.6 35B · 3B active | 28.5 t/sFP16 | 30.6 t/sQ8_0 |
| DeepSeek V4 Flash 284B · 13B active | 64.8 t/sQ2_K | doesn't fit at these settings |
| Qwen3.6 27B | 9.0 t/sFP16 | 9.7 t/sQ8_0 |
| Gemma 4 26B · 4B active | 24.4 t/sFP16 | 26.2 t/sQ8_0 |
Change the context, RAM or model in the calculator: M5 Max 128GB · M5 Pro 64GB
Every report on each card, with its source: M5 Max 128GB · M5 Pro 64GB