I used Omega Linux to revitalize a junk PC, and it's noticeably better than Ubuntu ...
Running Linux from a USB drive is possible. You can boot just about any distribution you want from USB. There are some things you should consider before going this route. I've used Linux in just about ...
If your old workhorse of a PC is starting to slow down in its old age, these low (or no-) cost tricks can help put some pep in its processing step.