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Can I run PowerMoE-3b on a Radeon RX 7900 XTX?

Yes

Its published weights (13.5 GB) fit in the 21.6 GB a Radeon RX 7900 XTX can use, with room for ≈ 4K tokens of context.

Full analysis of PowerMoE-3b Everything that runs on Radeon RX 7900 XTX Get the weights on Hugging Face
hf download ibm-research/PowerMoE-3b

Files and context on Radeon RX 7900 XTX

Each file of PowerMoE-3b (and of GGUF versions the site has analyzed), and how much context fits next to it, with the context cache in 16-bit or 8-bit.

FileSizeOn Radeon RX 7900 XTX Context (16-bit)Context (8-bit)
As published13.5 GBFits4K4K
4-bit (estimate)1.90 GBFits4K4K

PowerMoE-3b on other hardware

Popular models that run on Radeon RX 7900 XTX

Assumes 90% of the card's memory is usable and at least 4K tokens of context for one conversation, with the context cache in 16-bit unless noted. Fits leaves at least 20% of that memory for context; Tight leaves less.