quick question

would haveing a bigger case be better up till u to to large for cables to run to the part but like a 1 ft wide and 3 ft long case be easy to add things and cool

 

a big case is a good idea for good air flow, but its more important to get a good PSU, but a good PSU in a case with good air flow is better

 

whats a psu

edit: found it power supply unit

 

A power supply, what connects the computer to the plug in the wall.