Actually, it might help in the sense of helping with air ventilation. I never leave an open slot because of looks and possible access for dust. You can buy replacement covers at Fry's Electronics or even just pick up what you need at a used computer parts store.
Only if it screws up your airflow or you spill water into them ime. I leave mine off my computer because I swap out expansion cards a lot and haven't had any problems; CPU GPU hard drives all run within 1-2C with them on or off. If you only have one exhaust fan say a BTX case that really depends on ordered airflow and not your typical enthusiast rig that has a fan strapped to everything that gets remotely warm you might want to leave them on.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.