usability

I would like to do two questions, as I am considering applying for a patent for a new keyboard model that solves some of the drawbacks of current keyboards. Current problems with conventional keyboards When using traditional keyboards, we face several drawbacks that affect our productivity...

I am looking into the GT 640 gpu and one is a 2gb gddr3 while the other one is a 1gb gddr3. Performance wise, I am guessing the 2gb would be better but it does not have a built in fan. Is this something I should worry? http://pcpartpicker.com/part/asus-video-card-gt640dcsl2gd3...