NVIDIA RTX 3080 20GB vs NVIDIA RTX 5060 Ti 16GB for local LLMs
14 reports on the NVIDIA RTX 3080 20GB and 68 on the NVIDIA RTX 5060 Ti 16GB
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 RTX 3080 20GB (760 GB/s on the NVIDIA RTX 3080 20GB, 448 on the NVIDIA RTX 5060 Ti 16GB). The estimates below compare them on the models people run most.
- Memory
- 20GB
- Memory bandwidth
- 760 GB/s
- FP16 compute
- 119 TFLOPS
- Reports
- 14
- Memory
- 16GB
- Memory bandwidth
- 448 GB/s
- FP16 compute
- 95 TFLOPS
- Reports
- 68
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 3080 20GB | NVIDIA RTX 5060 Ti 16GB |
|---|---|---|
| Qwen3.8 27B | 35.4 t/sQ3_K_M | 29.2 t/sQ2_K |
| Qwen3.8 125B · 6B active | 19.1 t/sQ2_K, experts in RAM | doesn't fit at these settings |
| Qwen3.6 35B · 3B active | 140.5 t/sQ3_K_S | 96.6 t/sQ2_K |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | doesn't fit at these settings |
| Qwen3.6 27B | 35.4 t/sQ3_K_M | 29.2 t/sQ2_K |
| Gemma 4 26B · 4B active | 79.7 t/sQ4_K_S | 65.1 t/sQ3_K_S |
Change the context, RAM or model in the calculator: NVIDIA RTX 3080 20GB · NVIDIA RTX 5060 Ti 16GB
Every report on each card, with its source: NVIDIA RTX 3080 20GB · NVIDIA RTX 5060 Ti 16GB