Input Current Calculation; Power Dissipation - HP xw8600 - Workstation Site Preparation Manual

Input current calculation

The 1050W power supply can provide 1050 watts in a 15-amp circuit by using this input current
calculation:
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:
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
1
2
3
4
5
6
7
8
* 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 = Output Power / (Voltage x Power Factor x Efficiency)
where:
Output Power = 1050 watts
Voltage = 90 volts
Power Factor = 0.998
Efficiency = 0.8
Check with your power provider to see if your facility is exposed to 90-volt power. If 90
CPU DIMM
2 x 80W 8 x 4GB 667 MHz
2 x 80W 16 x 4GB 667 MHz
2 x 120W 8 x 4GB 667 MHz
2 x 120W 16 x 4GB 667 MHz
2 x 120W 16 x 4GB 667 MHz
2 x 120W 16 x GB 667 MHz
2 x 120W 16 x 4GB 667 MHz
2 x 150W 16 x 2GB 800 MHz
Graphics HDD ODD
Two FX5600 5
Two FX5600 5
Two FX5600 5
Two FX1700 5
Two FX3700 5
Two FX4600 5
Two FX5600 5
2 x FX4600 2
PCI Power Consumption*
2 0 825W
2 0 920W
2 0 915W
2 0 760W
2 0 875W
2 0 950W
2 0 1000W
2 0 1025W
Input current calculation 3