Comment by yjftsjthsd-h

When I was younger, I was very pleased when I stumbled across the trick of putting all of a DOS system on a RAM-disk, which made the system fly. Then I got to college and discovered in my CS classes that CPUs now had multi-megabyte on-CPU cache, which immediately led me to wonder how hard it would be to make a DOS system that ran completely out of cache. I'm not convinced that it would be practical for any number of reasons, but it still blows me away every time I look at what modern CPUs have in-package:)