Can I run gemma-3-27b-it-int4-awq on an RTX 3090?

Yes, just

Its published weights (18.5 GB) fit in the 21.6 GB an RTX 3090 can use, with room for ≈ 6K tokens of context.

hf download gaunernst/gemma-3-27b-it-int4-awq

Files and context on RTX 3090

Each file of gemma-3-27b-it-int4-awq (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.

gemma-3-27b-it-int4-awq on other hardware

Popular models that run on RTX 3090

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.