NVIDIA CMP 170HX 64GB (unlocked) vs NVIDIA L40S for local LLMs
13 reports on the NVIDIA CMP 170HX 64GB (unlocked) and 2 on the NVIDIA L40S
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 1.7x higher on the NVIDIA CMP 170HX 64GB (unlocked) (1,493 GB/s on the NVIDIA CMP 170HX 64GB (unlocked), 864 on the NVIDIA L40S). The estimates below compare them on the models people run most.
- Memory
- 64GB
- Memory bandwidth
- 1,493 GB/s
- FP16 compute
- not on record
- Reports
- 13
- Memory
- 48GB
- Memory bandwidth
- 864 GB/s
- FP16 compute
- 362.1 TFLOPS
- Reports
- 2
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 CMP 170HX 64GB (unlocked) | NVIDIA L40S |
|---|---|---|
| Qwen3.8 27B | 30.4 t/sQ8_0 | 17.6 t/sQ8_0 |
| Qwen3.8 125B · 6B active | 127.0 t/sQ3_K_S | 80.1 t/sQ2_K |
| Qwen3.6 35B · 3B active | 109.5 t/sQ8_0 | 55.4 t/sQ8_0 |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | doesn't fit at these settings |
| Qwen3.6 27B | 30.4 t/sQ8_0 | 17.6 t/sQ8_0 |
| Gemma 4 26B · 4B active | 82.1 t/sQ8_0 | 47.5 t/sQ8_0 |
Change the context, RAM or model in the calculator: NVIDIA CMP 170HX 64GB (unlocked) · NVIDIA L40S
Every report on each card, with its source: NVIDIA CMP 170HX 64GB (unlocked) · NVIDIA L40S