Is there such a thing as high-performance #permacomputing ?  
On one hand, HPC implies centralization. On the other hand, some important tasks like weather prediction or build farms benefit everyone and require centralized infrastructure.

@csepp My proposition would be for the high performance to be related to the software part - where you do high performance software on the old hardware so it beats the inefficient software on modern hardware, or rewriting firmware to make it better.

You meant like retired supercomputers, right?