When a processor in a computer system is placed in a low power mode, power consumption of the computer system may be further reduced by reducing power consumption of one or more components of a memory coupled to the processor and by reducing power consumption of one or more components of a controller...http://www.google.de/patents/US20040139359?utm_source=gb-gplus-sharePatent US20040139359 - Power/performance optimized memory controller considering processor power states
