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sigbottle • today at 2:20 PM • 3 replies • view on HN

It's interesting though that Q4 seems to be enough, is there a reason that 4 bit floats are good enough for inference?


Replies

nottorp • today at 2:55 PM

Is Qwen 3.8 at Q4 good enough?

I tried to run 3.5 27b Q4 on what local hardware i had (only 8 Gb) and i was very disappointed. 3.8 wouldn't have fit in my VRAM and i wasn't in the mood to leave it overnight at slow speeds so I didn't try.

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MaxikCZ • today at 2:25 PM

New models are trained with 8/4bit quantization in mind. Going from "native" 8 to 4 isnt as big of a step as going from 8 to 4 if native is full bf16.

amelius • today at 2:30 PM

3 is the magic number, and 4 > 3.

(seriously, nobody knows why any of this works; it's just a matter of trying)