Power Efficiency; Power Supply Specifications Summary; Standard 1100W Power Supply; Energy Smart 750W Power Supply - Dell PowerEdge R715 Technical Manual

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4.2 Power Efficiency

One of the main features of the 11G family of servers is enhanced power efficiency. The R715
achieves higher power efficiency by implementing the following features:
•
User-selectable power cap (subsystems will throttle to maintain the specified power cap)
•
Improved power budgeting
•
Accurate inlet temperature
•
Power-supply and VR efficiency improvements
•
Use of switching regulators instead of linear regulators
•
Closed-loop thermal throttling
•
Increased rear venting and 3D venting
•
PWM fans with an increased number of fan zones and configuration-dependent fan speeds
•
Use of DDR3 memory (lower voltage compared to DDR2, UDIMM support)
•
Processor VR dynamic phase shedding
•
Memory VR static phase shedding
•
Ability to configure a random time interval for system start after an AC power failure
•
Ability for an entire rack to power on without exceeding the available power
•
BIOS Power/Performance options page
•
Active Power Controller (BIOS-based processor P-state manager)
•
Ability to power down or throttle memory
•
Ability to disable a processor core
•
Ability to turn off embedded NICs or PCI-e lanes when not being used
•
Option to run PCI-e at Gen1 speeds instead of Gen2

4.3 Power Supply Specifications Summary

4.3.1

Standard 1100W Power Supply

The PowerEdge R715 1100W power supply is offered for standard configurations. See the following
table for specifications.
Table 4.
AC Power Supply (per power supply)
Wattage
Voltage
Maximum inrush current
The R715 1100W Power Supply is certified Gold (80 Plus) and Climate Savers 3. It is certified UL approved and
incorporates PFC logic.
4.3.2

Energy Smart 750W Power Supply

The PowerEdge R715 Energy Smart 750W power supply is offered for configurations which do not
require maximum power headroom. See the following table for specifications.
PowerEdge R715 Technical Guide
Standard 1100W Power Supply Specifications
1100 (1023, low line)
90-264 VAC, auto-ranging, 47-63 Hz
Under typical line conditions and over the entire system
ambient operating range, the inrush current may reach 55A per
power supply for 10ms or less
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