I have champion and Honda 2000. Both are great units and both have a place in life. The Champion is louder than the Honda. Like others stated not as load as others. Get the generator running then turn on what you want to run. Biggest draw first wait till gen return to high speed then the next item etc. You will have no problem using you computer. The problem comes into play when your almost maxed out on power. There was no inverters years ago. Just regular ones. Worked then will work now. Remember to turn everything off prior to disconnecting the gen, this will protect you from low voltage. Good luck. If you worried about noise do a search on the net. There is a company that sells some cover that gets great reviews about 80.00. The champion is no louder that a truck with a ref running. It's quieter the that. Enjoy.
2009 Ford F250 Super Duty
2008 Flagstaff Ultralite 23FBS with slide out (standard)
2006 H-D Flhxi
2001 H-D Dyna
Champion gen 4000