AMD Gorgon Halo 192GB vs M1 Ultra 128GB for local LLMs
8 reports on the AMD Gorgon Halo 192GB and 11 on the M1 Ultra 128GB
Which is faster for local LLMs?
On gpt-oss 117B · 5.1B active at 4-bit, the AMD Gorgon Halo 192GB has 49.0 generation tokens/s (2 runs); prompt processing 760.0 tokens/s (2 runs); the M1 Ultra 128GB has 65.5 generation tokens/s (one run); prompt processing 392.4 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 3.0x higher on the M1 Ultra 128GB (273 GB/s on the AMD Gorgon Halo 192GB, 819 on the M1 Ultra 128GB).
- Memory
- 192GB unified
- Memory bandwidth
- 273 GB/s
- FP16 compute
- 61.4 TFLOPS
- Reports
- 8
- Memory
- 128GB unified
- Memory bandwidth
- 819 GB/s
- FP16 compute
- 21 TFLOPS
- Reports
- 11
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 | AMD Gorgon Halo 192GB | M1 Ultra 128GB |
|---|---|---|
| gpt-oss 117B · 5.1B active4-bit | 49.02 runsPP 760.0 (2 runs)llama.cpp512 context, 1 not stated | 65.5one runPP 392.4 (one run)engine not statedcontext 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 | AMD Gorgon Halo 192GB | M1 Ultra 128GB |
|---|---|---|
| gpt-oss 117B · 5.1B active | 11.7 t/sQ8_0 | 42.7 t/sQ5_K_S |
| Qwen3.8 27B | 2.8 t/sFP16 | 7.5 t/sFP16 |
| Qwen3.8 125B · 6B active | 9.5 t/sQ8_0 | 34.0 t/sQ5_K_S |
| Qwen3.6 35B · 3B active | 10.0 t/sFP16 | 23.5 t/sFP16 |
| DeepSeek V4 Flash 284B · 13B active | 12.5 t/sQ4_K_M | 53.5 t/sQ2_K |
| Qwen3.6 27B | 2.8 t/sFP16 | 7.5 t/sFP16 |
| Gemma 4 26B · 4B active | 7.5 t/sFP16 | 20.2 t/sFP16 |
Change the context, RAM or model in the calculator: AMD Gorgon Halo 192GB · M1 Ultra 128GB
Every report on each card, with its source: AMD Gorgon Halo 192GB · M1 Ultra 128GB