this post was submitted on 27 Nov 2023
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LocalLLaMA

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Community to discuss about Llama, the family of large language models created by Meta AI.

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Quantizing 70b models to 4-bit, how much does performance degrade? (alien.top)
submitted 9 months ago by ae_dataviz@alien.top to c/localllama@poweruser.forum
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The title, pretty much.

I'm wondering whether a 70b model quantized to 4bit would perform better than a 7b/13b/34b model at fp16. Would be great to get some insights from the community.

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[–] Dusty_da_Cat@alien.top 1 points 9 months ago

The golden standard is 2 x 3090/4090 cards, which is 48 GBs of VRAM total. You can get by with 2 P40s(Need cooling solution) and run onboard video, if you want to save some money. The speeds will be slower, but still better than running on System RAM on typical setups.