Puppy 4 wells on a wide range of computer and may perform better than Puppy 5 if you don't have a brand new computer.
Puppy 4 versions:-
- Puppy431 - last official version of series 4 released
- Puppy430 - superseded by 431
- Puppy421 - superseded by 430
- Puppy440 - community, non-finally-released edition
- Puppy432 - private , non-official, enhanced edition of 431