Dell PowerEdge R720 Technical Guide - Page 36

Optimized thermal design - operating temperature

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Figure 13 shows a 750W power supply unit extended from an R720 system. The PowerEdge R720 and R720xd support up to two AC or DC power supplies with 1 + 1 redundancy, auto sensing, and auto-switching capability. Dell PSUs have achieved Platinum efficiency levels as shown in Table 20. Form factor Output Class Redundant 86mm 495W 750W 1100W 1100W DC1 Platinum Platinum Platinum+ Gold 11100W DC power supply available Q2 2012. 10% 82.0% 82.0% 89.0% 80.0% Efficiency targets by load 20% 90.0% 90.0% 93.0% 88.0% 50% 94.0% 94.0% 94.5% 92.0% 100% 91.0% 91.0% 92.0% 88.0% Thermal management of PowerEdge R720 and R720xd delivers high performance for the right amount of cooling to components at the lowest fan speeds across a wide range of ambient temperatures from 10°C to 35°C (50°F to 95°F) and to extended ambient temperature ranges (see Table 32) . The benefits to you are lower fan power consumption (lower server system power and data center power consumption) and greater acoustical versatility. The PowerEdge R720 is quiet enough to be used in an office environment in typical and minimum configurations, and the R720xd can also operate at a similar level in certain configurations. The thermal design of the PowerEdge R720 and R720xd reflect the following:  Optimized thermal design: The system layout is architected for optimum thermal design. System component placement and layout are designed to provide maximum airflow coverage to critical components with minimum expense of fan power. 36 PowerEdge R720 and R720xd Technical Guide

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36
PowerEdge R720 and R720xd Technical Guide
Figure 13 shows a 750W power supply unit extended from an R720 system.
The PowerEdge R720 and R720xd support up to two AC or DC power supplies with 1 + 1
redundancy, auto sensing, and auto-switching capability.
Dell PSUs have achieved Platinum efficiency levels as shown in Table 20.
Form factor
Output
Class
Efficiency targets by load
10%
20%
50%
100%
Redundant 86mm
495W
Platinum
82.0%
90.0%
94.0%
91.0%
750W
Platinum
82.0%
90.0%
94.0%
91.0%
1100W
Platinum+
89.0%
93.0%
94.5%
92.0%
1100W DC
1
Gold
80.0%
88.0%
92.0%
88.0%
1
1100W DC power supply available Q2 2012.
Thermal management of PowerEdge R720 and R720xd delivers high performance for the right
amount of cooling to components at the lowest fan speeds across a wide range of ambient
temperatures from 10°C to 35°C (50°F to 95°F) and to extended ambient temperature ranges (see
Table 32) . The benefits to you are lower fan power consumption (lower server system power and
data center power consumption) and greater acoustical versatility. The PowerEdge R720 is quiet
enough to be used in an office environment in typical and minimum configurations, and the R720xd
can also operate at a similar level in certain configurations.
The thermal design of the PowerEdge R720 and R720xd reflect the following:
Optimized thermal design:
The system layout is architected for optimum thermal design.
System component placement and layout are designed to provide maximum airflow coverage to
critical components with minimum expense of fan power.