A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. A cache is a smaller, faster memory, closer to a processor core, which stores copies of the data from frequently used main memory locations.
It takes approximately 31 empty aluminum cans to equal 1 pound. As of 2014, the average weight of an empty aluminum can is 14.9 grams.
There is no limit to the amount of times an aluminum can be recycled. We use over 80,000,000,000 aluminum soda cans every year. At one time, aluminum was more valuable than gold! A 60-watt light bulb can be run for over a day on the amount of energy saved by recycling 1 pound of steel.