There is described a dynamic memory buffer (30, 210) for buffering between one or more software applications (40) executing on computing means and one or more data generating and/or receiving devices (20) in communication through the buffer (30, 210) to the one or more applications (40), the buffer (30, 210) including buffer managing means (210) for controlling allocation of one or more portions of the buffer (30) to the one or more applications (40) so as to reduce power dissipation occurring within the one or more devices (20).