Why are these Intel Arc Pro variants so differently priced?

A user comparing Intel Arc Pro B70 graphics cards for local LLM experimentation asks why two variants are priced differently, noting differences such as clock speed and blower design, and whether the blower design suits a Fractal Design Meshify C Mini mATX case.

I was considering getting myself an Intel Arc Pro B70 for some local LLM excperimentation. During my search I came across these two variants, normally I would expect the OEM versions are off by a little from the reference cards, but with some obvious differences like clock speed. Is it because of the blower design? Does that make it unsuitable for a regular tower case. I have Fractal Design Meshify C Mini it’s an mATX case .