M4 Pro 64GB vs AMD RX 6700 XT for local LLMs
33 reports on the M4 Pro 64GB and 4 on the AMD RX 6700 XT
Which is faster for local LLMs?
On Gemma 4 12B at 4-bit, the M4 Pro 64GB has 30.0 generation tokens/s (2 runs); prompt processing 291.5 tokens/s (2 runs); the AMD RX 6700 XT has 34.6 generation tokens/s (one run); prompt processing 653.9 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 41% higher on the AMD RX 6700 XT (273 GB/s on the M4 Pro 64GB, 384 on the AMD RX 6700 XT).
- Memory
- 64GB unified
- Memory bandwidth
- 273 GB/s
- FP16 compute
- 9.2 TFLOPS
- Reports
- 33
- Memory
- 12GB
- Memory bandwidth
- 384 GB/s
- FP16 compute
- 26.4 TFLOPS
- Reports
- 4
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 | M4 Pro 64GB | AMD RX 6700 XT |
|---|---|---|
| Gemma 4 12B4-bit | 30.02 runsPP 291.5 (2 runs)llama.cpp, 1 not statedcontext not stated | 34.6one runPP 653.9 (one run)llama.cpp8K 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 | M4 Pro 64GB | AMD RX 6700 XT |
|---|---|---|
| Gemma 4 12B | 8.6 t/sFP16 | 31.3 t/sQ4_K_M |
| Qwen3.8 27B | 7.7 t/sQ8_0 | 1.6 t/sQ8_0, layers on CPU |
| Qwen3.8 125B · 6B active | 34.9 t/sQ2_K | doesn't fit at these settings |
| Qwen3.6 35B · 3B active | 24.1 t/sQ8_0 | 13.3 t/sQ6_K, experts in RAM |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | doesn't fit at these settings |
| Qwen3.6 27B | 7.7 t/sQ8_0 | 1.6 t/sQ8_0, layers on CPU |
| Gemma 4 26B · 4B active | 20.7 t/sQ8_0 | 62.7 t/sQ2_K |
Change the context, RAM or model in the calculator: M4 Pro 64GB · AMD RX 6700 XT
Every report on each card, with its source: M4 Pro 64GB · AMD RX 6700 XT