A power subsystem including a mechanism for satisfying a predetermined power limit in a computer system. The power subsystem may include a split power supply and a voltage regulator. The split power supply may include at least a first voltage supply line and a second voltage supply line. The voltage...http://www.google.com.au/patents/US7294976?utm_source=gb-gplus-sharePatent US7294976 - Split power supply subsystem with isolated voltage supplies to satisfy a predetermined power limit