NVIDIA RTX Pro 4500 Blackwell 32GB vs AMD Strix Halo 128GB for local LLMs
5 reports on the NVIDIA RTX Pro 4500 Blackwell 32GB and 320 on the AMD Strix Halo 128GB
Which is faster for local LLMs?
On Qwen3.6 27B at 4-bit, the NVIDIA RTX Pro 4500 Blackwell 32GB has 45.2 generation tokens/s (one run); prompt processing 2022.5 tokens/s (one run); the AMD Strix Halo 128GB has 12.0 generation tokens/s (one run); prompt processing 322.0 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 3.5x higher on the NVIDIA RTX Pro 4500 Blackwell 32GB (896 GB/s on the NVIDIA RTX Pro 4500 Blackwell 32GB, 256 on the AMD Strix Halo 128GB).
- Memory
- 32GB
- Memory bandwidth
- 896 GB/s
- FP16 compute
- 190 TFLOPS
- Reports
- 5
- Memory
- 128GB unified
- Memory bandwidth
- 256 GB/s
- FP16 compute
- 59 TFLOPS
- Reports
- 320
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 | NVIDIA RTX Pro 4500 Blackwell 32GB | AMD Strix Halo 128GB |
|---|---|---|
| Qwen3.6 27B4-bit | 45.2one runPP 2022.5 (one run)llama.cppcontext not stated | 12.0one runPP 322.0 (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 | NVIDIA RTX Pro 4500 Blackwell 32GB | AMD Strix Halo 128GB |
|---|---|---|
| Qwen3.6 27B | 22.5 t/sQ6_K | 3.5 t/sFP16 |
| Qwen3.8 27B | 22.5 t/sQ6_K | 3.5 t/sFP16 |
| Qwen3.8 125B · 6B active | 19.4 t/sQ2_K, experts in RAM | 12.6 t/sQ6_K |
| Qwen3.6 35B · 3B active | 81.5 t/sQ5_K_M | 12.6 t/sFP16 |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | 33.5 t/sQ2_K |
| Gemma 4 26B · 4B active | 57.2 t/sQ6_K | 9.5 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: NVIDIA RTX Pro 4500 Blackwell 32GB · AMD Strix Halo 128GB
Every report on each card, with its source: NVIDIA RTX Pro 4500 Blackwell 32GB · AMD Strix Halo 128GB