HP xw8600 HP xw Workstation series - HP 1050W 80 Plus Power Supply Site Prepar - Page 7

Input current calculation The 1050W power supply can provide 1050 watts in a 15-amp circuit by using this input current calculation: Input Current = Output Power / (Voltage x Power Factor x Efficiency) where: Output Power = 1050 watts Voltage = 90 volts Power Factor = 0.998 Efficiency = 0.8 In this formula, the voltage (90 volts) includes all power line variations-line voltage sag, brown out conditions, power grid characteristics, and so on. CAUTION: Check with your power provider to see if your facility is exposed to 90-volt power. If 90 volts cannot be guaranteed to your workstation, the input voltage source might blow the fuse in the power supply or trip the breaker. For reliable workstation operation under heavy loading, use an uninterruptible power supply (UPS) because it provides reliable voltage levels. Power dissipation The following table contains typical system configurations for an HP xw8600 Workstation. Table 1 Typical HP xw8600 Workstation system configurations Configuration CPU DIMM Graphics HDD ODD PCI Power Consumption* 1 2 x 80W 8 x 4GB 667 MHz Two FX5600 5 2 0 825W 2 2 x 80W 16 x 4GB 667 MHz Two FX5600 5 2 0 920W 3 2 x 120W 8 x 4GB 667 MHz Two FX5600 5 2 0 915W 4 2 x 120W 16 x 4GB 667 MHz Two FX1700 5 2 0 760W 5 2 x 120W 16 x 4GB 667 MHz Two FX3700 5 2 0 875W 6 2 x 120W 16 x GB 667 MHz Two FX4600 5 2 0 950W 7 2 x 120W 16 x 4GB 667 MHz Two FX5600 5 2 0 1000W 8 2 x 150W 16 x 2GB 800 MHz 2 x FX4600 2 2 0 1025W * Power consumption is highly dependent on software use. The table values represent examples of maximum power consumption per configuration, and may not represent actual usage. ENWW Input current calculation 3