In his most recent article, [Ken Shirriff] takes a break from putting ASICs under a microscope, and instead does the same in a proverbial manner with the word ‘mainframe’. Although these days ...

The industrial-strength mainframe computer, invented decades ago for heavy-duty data processing, is proving its staying power ...

A mainframe might use 32 of these chips ... There’s more to it than that — read the original post for more details. You’ll even read speculation about how IBM managed a virtual L4 cache ...