Can I run Nanbeige4.3-33B-GGUF on an NVIDIA B300?

Yes

Its Q8_0 file (35.2 GB) fits in the 259 GB an NVIDIA B300 can use, with room for ≈ 512K tokens of context.

ollama run hf.co/AtomicChat/Nanbeige4.3-33B-GGUF:Q8_0

Files and context on NVIDIA B300

Each file of Nanbeige4.3-33B-GGUF (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.

Nanbeige4.3-33B-GGUF on other hardware

Popular models that run on NVIDIA B300

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.