do you even know what the internal components of a computer are? the inside of a Dell or any other machine is really no different from Apple. You probably think there is a little small hidden city beneath the ocean where little Apple elves assemble Apple products using only Apple parts and each Apple product is sprinkled with pixie dust before it leaves the little hidden city of Apple
Maybe there isn't but my current iMac has lasted 3x longer than any Dell/Gateway desktop that I previously had and my MBP has lasted almost 5x longer than any laptop I owned from Dell
My Apple computers have held up consistently well the last 2 years while my Dell/Gateways broke down almost monthly
No difference in what was put on them software wise either