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.
The weight of aluminum cans can vary and has changed over time. According to the Australian Aluminum Council, the average can weighed 16.55 grams in 1992. In 2001, the average weight decreased to the weight that is the average as of 2014. Today, aluminium cans are about 30% lighter than they were 25 years ago.