What is a node GPU?

Could you please elaborate on the concept of a node GPU? As a practitioner in the field of cryptocurrency and finance, I'm curious to understand how this technology fits into the broader landscape. Specifically, how does a node GPU differ from traditional GPU architectures? Is it designed for a particular use case in cryptocurrency mining or transactions? Also, how does it impact the overall performance and efficiency of the network? Understanding the intricacies of this technology could provide valuable insights into the evolving landscape of cryptocurrency and finance.