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.
Selling Cans. Recycling centers pay by the pound for aluminum cans. According to Alcoa, you'll need 34 cans to make one pound. Prices fluctuate and can vary between centers. Some places will pay more for larger quantities of cans, so you may find it worthwhile to save up until you have a trailer full of them before you turn them in.