[musicale]

Old compilers/IDEs like Turbo Pascal or Think C were/are usably fast on single-digit MHz machines and emulators.

And even if the CPU is 50 MHz, modern DRAM and NVMe flash are very fast compared to memory and storage on 1990s (or older) machines.

Older versions of Microsoft Office (etc.) ran about the same on 50 MHz systems as Office 365 runs today.