HP Z820 Site preparation guide - HP Z800 Workstation 1110W power supply, HP Z8 - Page 5

Power consumption and cooling, Introduction, Power consumption and cooling considerations - specifications

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Power consumption and cooling Introduction If your power load is over 800 watts, and your power source is between 90 to 115 volts, the HP Z800 Workstation 1110W power supply or the HP Z820 Workstation 1125W power supply are designed for your applications, and this site preparation guide is important. The 1110W power supply has an efficiency rating that qualifies it for 80 PLUS SILVER status*. The 1125W power supply has an efficiency rating that qualifies it for 80 PLUS GOLD status**. For loads over 800 watts, observe the considerations and limitations presented in the following sections. * The 80 PLUS specification states that all SILVER power supplies are at least 85%/89%/85% efficient at 20%, 50% and 100% of rated output, respectively. * The 80 PLUS specification states that all GOLD power supplies are at least 87%/90%/87% efficient at 115V at 20%, 50% and 100% of rated output, respectively. Power consumption and cooling considerations An HP workstation with a 1110W 80 PLUS SILVER or 1125W GOLD power supply might require more power than the typical office environment can supply. Consider the following issues: ● A fully loaded configuration might draw up to 15 amps of 110V power, leaving no power for other accessories. A typical office has several 15 amp circuits. ● An office air conditioning system must accommodate the extra heat generated by fully loaded workstation configurations. ● Some environments might have power conditioning problems that prevent the reliable use of high- end workstation configurations. ● If your workstation is powered from a 220V source and you meet HP configuration guidelines, you do not need an uninterruptible power supply (UPS) for a maximum output power of 1250 watts with the HP Z800 Workstation 1110W power supply or the HP Z820 Workstation 1125W power supply. Introduction 1

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Power consumption and cooling
Introduction
If your power load is over 800 watts, and your power source is between 90 to 115 volts, the HP Z800
Workstation 1110W power supply or the HP Z820 Workstation 1125W power supply are designed
for your applications, and this site preparation guide is important. The 1110W power supply has an
efficiency rating that qualifies it for 80 PLUS SILVER status*. The 1125W power supply has an
efficiency rating that qualifies it for 80 PLUS GOLD status**.
For loads over 800 watts, observe the considerations and limitations presented in the following
sections.
* The 80 PLUS specification states that all SILVER power supplies are at least 85%/89%/85% efficient at 20%, 50% and
100% of rated output, respectively.
* The 80 PLUS specification states that all GOLD power supplies are at least 87%/90%/87% efficient at 115V at 20%, 50%
and 100% of rated output, respectively.
Power consumption and cooling considerations
An HP workstation with a 1110W 80 PLUS SILVER or 1125W GOLD power supply might require more
power than the typical office environment can supply. Consider the following issues:
●
A fully loaded configuration might draw up to 15 amps of 110V power, leaving no power for
other accessories. A typical office has several 15 amp circuits.
●
An office air conditioning system must accommodate the extra heat generated by fully loaded
workstation configurations.
●
Some environments might have power conditioning problems that prevent the reliable use of high-
end workstation configurations.
●
If your workstation is powered from a 220V source and you meet HP configuration guidelines, you
do not need an uninterruptible power supply (UPS) for a maximum output power of 1250 watts
with the HP Z800 Workstation 1110W power supply or the HP Z820 Workstation 1125W
power supply.
Introduction
1