this of it this way
A VC that is 1G 128bit

1gig = Huge container
128bit = small hole for the bottle
A VC that is 512MB 256bit

512mb = smaller container
256bit = bigger hole for the bottle
think of the water as the data, and the hole as the BITs.
bigger container can hold more data so that leaves your computer to do other task.
after filling it with water, it can now multitask and do other work. but still there's a limit of how fast the bottle can be emptied.
but you dont really need all the containers, you need efficiency, when we play games, we usually close all running applications, the antivirus, all the programs not needed. usually dont need 1gig of data.
when we need water, we want it fast. so Getorade can give that to you as fast as it could.
Claro ba explanation?