An apparatus and method are provided for managing a cache. The cache is arranged to comprise a plurality of cache sections, where each cache section is powered independently of the other cache sections in the plurality of cache sections, and the apparatus has power control circuitry to control power to each of the cache sections. The power control circuitry is responsive to a trigger condition indicative of an ability to operate the cache in a power saving mode, to perform a latency evaluation process to determine a latency indication for each of the cache sections, and to control which of a subset of the cache sections to power off in dependence on the latency indication. This can allow the power consumption savings realised by turning off one or more cache sections to be optimised to take into account the current system state.