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Can a RTX 4090 24GB run Ornith-1.5 9B?

Yes. Ornith-1.5 9B fits in fast memory on RTX 4090 24GB at Default (8 GB needed, 23.5 GB usable), about 92 tok/s (estimate).

Hardware: RTX 4090 24GB · Model: Ornith-1.5 9B

RTX 4090 24GB has 24 GB of VRAM and 1008 GB/s of memory bandwidth. The checker holds back 0.5 GB of VRAM for the driver and assumes 16 GB of system RAM, so fast memory usable by Ollama is 23.5 GB. Partial offload may also use 60% of that system RAM. Ornith-1.5 9B (9B, Ornith) at Default is a 6.6 GB download and needs 8 GB with headroom for about 8k tokens.

Best quantDefault
Download size6.6 GB
Memory needed8 GB
Usable fast memory23.5 GB
Fitfits in fast memory
Estimated speed~92 tok/s (estimate)
Commandollama run ornith-1.5:9b
Open RTX 4090 24GB in the checker

Estimates, not benchmarks. Model sizes are ollama.com download sizes; memory needed adds headroom for ~8k tokens of context; speeds are rough figures from memory bandwidth. Data updated 2026-10-23.

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