Question 1

Can a NVIDIA RTX 5080 (16GB) run Qwen3 32B?

Accepted Answer

Just about — Qwen3 32B runs at Q2_K (12.3 GB) at about 46–69 tok/s on a NVIDIA RTX 5080 (16GB).

Question 2

How much memory does Qwen3 32B need?

Accepted Answer

Qwen3 32B needs about 14.2 GB at 4K context at its smallest quantization. A NVIDIA RTX 5080 (16GB) has 16.0 GB.

Quant	Size	Speed	Fit
Q2_K	12.3 GB	46–69 tok/s	Tight / slow
Q3_K_M	16.0 GB	37–56 tok/s	Won't fit
Q4_K_M	19.8 GB	31–47 tok/s	Won't fit
Q5_K_M	23.2 GB	27–41 tok/s	Won't fit
Q6_K	26.9 GB	24–36 tok/s	Won't fit
Q8_0	34.8 GB	19–28 tok/s	Won't fit
FP16	65.5 GB	10–16 tok/s	Won't fit