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Can a RTX 3090 24GB run Ornith-1.5 35B-A3B (MoE)?

Yes, with partial offload (slower). Ornith-1.5 35B-A3B (MoE) on RTX 3090 24GB at Default uses system RAM (24.8 GB needed, 23.5 GB usable), about 85 tok/s (estimate).

Hardware: RTX 3090 24GB · Model: Ornith-1.5 35B-A3B (MoE)

RTX 3090 24GB has 24 GB of VRAM and 936 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 35B-A3B (MoE) (35B, 3B active, Ornith) at Default is a 23 GB download and needs 24.8 GB with headroom for about 8k tokens.

Best quantDefault
Download size23 GB
Memory needed24.8 GB
Usable fast memory23.5 GB
Fitpartial offload (slower)
Estimated speed~85 tok/s (estimate)
Commandollama run ornith-1.5:35b
Open RTX 3090 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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