I was thinking about this and made a few conclusions:
- A math coprocessor (for CPUs without a built-in FPU) would've been a must-have since folding is mathematically intensive.
- Work units would have to be much simpler and smaller in file size.
- F@H would've been programmed in 16-bits for MS-DOS. There might have been a high-performance client with some 32-bit code (for Windows 3.1 enhanced mode users
![Smile :)](./images/smilies/icon_smile.gif)
- There would have been fewer participants, because computers and Internet access were less common (and more expensive) back then.
The above points are just my 2 cents. Feel free to imagine and add what you think F@H would have been like if it could exist 20 years ago.