Power, Thermal, Acoustic; Power Supplies And Power Subsystem; Figure 17. R910 Power Supply - Dell External OEMR R910 Technical Manual

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6 Power, Thermal, Acoustic

The PowerEdge R910 achieves enhanced power efficiency by implementing the following features:

User-selectable power cap (subsystems will throttle to maintain the specified power cap)

Improved power budgeting

Larger heat-sinks for processors and IOH

Accurate inlet temperature

PSU/VR efficiency improvements

Switching regulators instead of linear regulators

Closed loop thermal throttling

Increased rear venting/3D venting

PWM fans with an increased number of fan zones and configuration-dependent fan speeds

Use of DDR3 memory (lower voltage than DDR2)

CPU VR dynamic phase shedding

Memory VR static phase shedding

Random time interval for system start

Allows an entire rack to power on without exceeding the available power

BIOS Power/Performance options page

BIOS-based CPU P-state manager (power management in a virtualized environment)

Ability to slow down or throttle memory

Ability to disable a CPU core

Ability to turn off items not being used (i.e., USB ports, embedded NICs, unused PCIe lanes,
etc.)

Option to run PCIe at Gen1 speeds instead of Gen2

6.1 Power Supplies and Power Subsystem

PowerEdge R910 supports two types of power supply units (PSUs):

1100W High Output PSU

750W EnergySmart PSU
Dell PowerEdge R910 Technical Guide

Figure 17. R910 Power Supply

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