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.
An empty aluminum can weighs approximately half an ounce (13.5 g). There are 34 empty 12 ounce aluminum cans to a pound or 70 to a kilogram. In many parts of the world a deposit can be recovered by turning in empty plastic, glass, and aluminum containers.