Abstract: A power consumption control method for a multicore CPU containing a plurality of cores each occupying a memory with partial array self refresh mode. The method includes making, when a core in the multicore CPU enters a power save mode, another core in the multicore CPU compress data in the memory occupied by the core entering the power save mode, store back compressed data in the memory, and control the memory to perform refresh operations to one or more banks retaining the compressed data.

Abstract: A storage system comprises multiple physical storage devices, and a power supply for the multiple physical storage devices. Each physical storage device requires an input of a first voltage and an input of a second voltage that is a lower voltage than the first voltage. The power supply comprises a first power supply circuit that is made redundant and a second power supply circuit that is made redundant. Each first power supply circuit outputs a first voltage, which is input to the respective physical storage devices. Each second power supply circuit outputs a second voltage to a storage device group (two or more physical storage devices of the multiple physical storage devices) corresponding to this second power supply circuit. Each second power supply circuit is isolated from a circuit board comprising the first power supply circuit.

Abstract: A method is disclosed that includes receiving a classification voltage at a powered device from a network. The classification voltage includes a baseline voltage level that is below an operating voltage range of the powered device and includes a sequence of distinct signal elements derived from the classification voltage. The method further includes detecting a number of signal elements of the sequence of distinct signal elements. A current is drawn until the number of signal elements exceeds a predetermined number.

Abstract: A power supply circuit for a graphic card on a motherboard includes first to fourth electrical switches. The first electrical switch is connected to the motherboard to receive a power good signal from the motherboard. The second electrical switch is connected between the first electrical switch and each of the third and fourth electrical switches. The third and fourth electrical switches provide power to the graphic card. The first electrical switch is turned on or off according to the voltage of the power good signal. The second electrical switch is turned on or off by the first electrical switch, so as to selectively control one of the third and fourth electrical switches turn on to output power to the graphic card.