Yea, you can get away with a single core PC to boost some views. Depending on your internet connection as well. If you can push 20mbit or further, look into a dual core machine to maximise your speed. Exact specs don't really matter.
@Kingstone: Unfortunatley no. You can't emulate it because Tube increaser requires .net framework which is not compatible with Wine (Windows emulator). Your best bet would be to run windows in a Virtual Machine on linux.
But that slows windows down alot, just install windows XP then... It's one of the stablest and best Windows.