Can I run Ornith-1.0-9B on an RTX 4090?

Yes, just

Its published weights (18.8 GB) fit in the 21.6 GB an RTX 4090 can use, with room for ≈ 81K tokens of context.

Full analysis of Ornith-1.0-9B Everything that runs on RTX 4090 Get the weights on Hugging Face

hf download ornith-ai/Ornith-1.0-9B

Files and context on RTX 4090

Each file of Ornith-1.0-9B (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.

File	Size	On RTX 4090	Context (16-bit)	Context (8-bit)
As published	18.8 GB	Tight	81K	163K
BF16ornith-ai/Ornith-1.0-9B-GGUF	17.9 GB	Tight	108K	216K
Q8_0ornith-ai/Ornith-1.0-9B-GGUF	9.53 GB	Fits	256K	256K
Q6_Kornith-ai/Ornith-1.0-9B-GGUF	7.36 GB	Fits	256K	256K
Q5_K_Mornith-ai/Ornith-1.0-9B-GGUF	6.47 GB	Fits	256K	256K
Q4_K_Mornith-ai/Ornith-1.0-9B-GGUF	5.63 GB	Fits	256K	256K

Ornith-1.0-9B on other hardware

Popular models that run on RTX 4090

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.