A washing machine with 1400RPM rotates 1400 times per minute to spin your laundry. This means that there's about 50% residual moisture in your laundry after the cycle. The higher the speed of your washing machine, the drier your laundry is when it comes out of the drum. If you want even drier laundry, choose a washing machine with 1600RPM. This means that your bedding comes out of the drum as dry as possible and doesn't take as long in the dryer.