Abstract: The described embodiments include a cache with a plurality of banks that includes a cache controller. In these embodiments, the cache controller determines a value representing non-native cache blocks stored in at least one bank in the cache, wherein a cache block is non-native to a bank when a home for the cache block is in a predetermined location relative to the bank. Then, based on the value representing non-native cache blocks stored in the at least one bank, the cache controller determines at least one bank in the cache to be transitioned from a first power mode to a second power mode. Next, the cache controller transitions the determined at least one bank in the cache from the first power mode to the second power mode.