NVIDIA RTX 5080 vs NVIDIA RTX Pro 6000 Blackwell for local LLMs
31 reports on the NVIDIA RTX 5080 and 71 on the NVIDIA RTX Pro 6000 Blackwell
Which is faster for local LLMs?
Nobody has reported the same model at the same quant on both cards yet, so there's no measured head-to-head. Memory bandwidth, which caps how fast a card can write, is 1.9x higher on the NVIDIA RTX Pro 6000 Blackwell (960 GB/s on the NVIDIA RTX 5080, 1,792 on the NVIDIA RTX Pro 6000 Blackwell). The estimates below compare them on the models people run most.
- Memory
- 16GB
- Memory bandwidth
- 960 GB/s
- FP16 compute
- 225 TFLOPS
- Reports
- 31
- Memory
- 96GB
- Memory bandwidth
- 1,792 GB/s
- FP16 compute
- 503 TFLOPS
- Reports
- 71
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.
| Model | NVIDIA RTX 5080 | NVIDIA RTX Pro 6000 Blackwell |
|---|---|---|
| Qwen3.8 27B | 62.6 t/sQ2_K | 18.3 t/sFP16 |
| Qwen3.8 125B · 6B active | doesn't fit at these settings | 83.1 t/sQ5_K_S |
| Qwen3.6 35B · 3B active | 207.0 t/sQ2_K | 57.5 t/sFP16 |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | 130.8 t/sQ2_K |
| Qwen3.6 27B | 62.6 t/sQ2_K | 18.3 t/sFP16 |
| Gemma 4 26B · 4B active | 139.6 t/sQ3_K_S | 49.3 t/sFP16 |
Change the context, RAM or model in the calculator: NVIDIA RTX 5080 · NVIDIA RTX Pro 6000 Blackwell
Every report on each card, with its source: NVIDIA RTX 5080 · NVIDIA RTX Pro 6000 Blackwell