Can I run blip2-opt-2.7b on an NVIDIA B200?

Yes

Its published weights (15.0 GB) fit in the 162 GB an NVIDIA B200 can use, with room for ≈ 438K tokens of context.

hf download Salesforce/blip2-opt-2.7b

Files and context on NVIDIA B200

Each file of blip2-opt-2.7b (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.

blip2-opt-2.7b on other hardware

Popular models that run on NVIDIA B200

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.