Can I run LightOnOCR-3-0.8B on an RTX PRO 6000 Blackwell?

Yes

Its published weights (1.71 GB) fit in the 86.4 GB an RTX PRO 6000 Blackwell can use, with room for ≈ 256K tokens of context.

Full analysis of LightOnOCR-3-0.8B Everything that runs on RTX PRO 6000 Blackwell Get the weights on Hugging Face

hf download lightonai/LightOnOCR-3-0.8B

Files and context on RTX PRO 6000 Blackwell

Each file of LightOnOCR-3-0.8B (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 PRO 6000 Blackwell	Context (16-bit)	Context (8-bit)
As published	1.71 GB	Fits	256K	256K
4-bit (estimate)	480 MB	Fits	256K	256K

LightOnOCR-3-0.8B on other hardware

NVIDIA H100Yes
RTX 5090Yes
RTX 4090Yes
RTX 3090Yes
RTX 5060 Ti 16 GBYes
RTX 3060 12 GBYes
RTX 4060Yes
RTX PRO 6000 BlackwellYes
Mac with 32 GBYes
Mac with 64 GBYes
Mac with 128 GBYes

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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.