So this is probably a dumb question, but how much does static electricity actually affect computer parts when installing them. Is it necessary to wear a protective wrist band? I have heard that when wearing wristbands, one has to keep the computer power cord plugged into the PSU with the switch off, but i have heard others say that you should not plug the computer in at all, but you should still wear the wrist band and attach it to the case with the alligator clip. Help anyone? Thanks.