M3 Max 128GB vs AMD Strix Halo 128GB for local LLMs
6 reports on the M3 Max 128GB and 111 on the AMD Strix Halo 128GB
Which is faster for local LLMs?
On Qwen3.5 35B · 3B active at 4-bit, the M3 Max 128GB runs at 90.8 tokens per second (one run) and the AMD Strix Halo 128GB at 45.0 (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 1.6x higher on the M3 Max 128GB (410 GB/s on the M3 Max 128GB, 256 on the AMD Strix Halo 128GB).
- Memory
- 128GB unified
- Memory bandwidth
- 410 GB/s
- FP16 compute
- 14.2 TFLOPS
- Reports
- 6
- Memory
- 128GB unified
- Memory bandwidth
- 256 GB/s
- FP16 compute
- 59 TFLOPS
- Reports
- 111
Measured on both
Median tokens per second 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 | M3 Max 128GB | AMD Strix Halo 128GB |
|---|---|---|
| Qwen3.5 35B · 3B active4-bit | 90.8one runoMLXcontext not stated | 45.0one runllama.cpp128K context |
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 | M3 Max 128GB | AMD Strix Halo 128GB |
|---|---|---|
| Qwen3.5 35B · 3B active | 16.8 t/sFP16 | 12.6 t/sFP16 |
| Qwen3.8 27B | 5.3 t/sFP16 | 3.5 t/sFP16 |
| Qwen3.8 125B · 6B active | 24.3 t/sQ5_K_S | 12.6 t/sQ6_K |
| DeepSeek V4 Flash 284B · 13B active | 38.2 t/sQ2_K | 33.5 t/sQ2_K |
| Qwen3.6 35B · 3B active | 16.8 t/sFP16 | 12.6 t/sFP16 |
| Qwen3.6 27B | 5.3 t/sFP16 | 3.5 t/sFP16 |
| GLM-5.3 320B · 18B active | doesn't fit at these settings | 11.1 t/sQ2_K |
Change the context, RAM or model in the calculator: M3 Max 128GB · AMD Strix Halo 128GB
Every report on each card, with its source: M3 Max 128GB · AMD Strix Halo 128GB