AMD MI50 32GB vs M5 Ultra 96GB for local LLMs
12 reports on the AMD MI50 32GB and 3 on the M5 Ultra 96GB
Which is faster for local LLMs?
On Qwen3.8 27B at 8-bit, the AMD MI50 32GB runs at 22.8 tokens per second (one run) and the M5 Ultra 96GB at 15.0 (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 20% higher on the M5 Ultra 96GB (1,024 GB/s on the AMD MI50 32GB, 1,229 on the M5 Ultra 96GB).
- Memory
- 32GB
- Memory bandwidth
- 1,024 GB/s
- FP16 compute
- 26.5 TFLOPS
- Reports
- 12
- Memory
- 96GB unified
- Memory bandwidth
- 1,229 GB/s
- FP16 compute
- not on record
- Reports
- 3
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 quant level. Engines and context lengths can still differ between the runs. How to read these
| Model | AMD MI50 32GB | M5 Ultra 96GB |
|---|---|---|
| Qwen3.8 27B8-bit | 22.8one run | 15.0one run |
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 | AMD MI50 32GB | M5 Ultra 96GB |
|---|---|---|
| Qwen3.8 27B | 25.7 t/sQ6_K | 14.9 t/sFP16 |
| Qwen3.8 125B · 6B active | 19.6 t/sQ2_K, experts in RAM | 103.1 t/sQ3_K_M |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | doesn't fit at these settings |
| Qwen3.6 35B · 3B active | 93.1 t/sQ5_K_M | 107.0 t/sQ8_0 |
| Qwen3.6 27B | 25.7 t/sQ6_K | 14.9 t/sFP16 |
| Gemma 4 26B · 4B active | 65.4 t/sQ6_K | 35.5 t/sFP16 |
| DeepSeek V4.1 Flash 552B · 16B active | doesn't fit at these settings | doesn't fit at these settings |
Change the context, RAM or model in the calculator: AMD MI50 32GB · M5 Ultra 96GB
Every report on each card, with its source: AMD MI50 32GB · M5 Ultra 96GB