Dell R710 Computer Hardware User Manual


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Dell™ PowerEdge™ R710 Technical Guidebook
14
SECTION 4. POWER, THERMAL, ACOUSTIC
A. Power Eciencies
One of the main features of the 11th generation of PowerEdge servers is enhanced power eciency.
PowerEdge R710 achieves higher power eciency by implementing the following features:
•User-selectablepowercap(subsystemswillthrottletomaintainthespeciedpowercap)
•Improvedpowerbudgeting
•Accurateinlettemperature
•PSU/VReciency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conguration-dependentfanspeeds
•UseofDDR3memory(lowervoltagecomparedtoDDR2,UDIMMsupport)
•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
•ActivePowerController(BIOS-basedCPUP-statemanager)
•Abilitytopowerdownorthrottlememory
•AbilitytodisableaCPUcore
•AbilitytoturnoLOMsorPCIelaneswhennotbeingused
•OptiontorunPCIeatGen1speedsinsteadofGen2
B. Power Supplies
I. Main Power Supply
The base redundant system consists of two hot-plug 570W Energy Smart (energy ecient) power
supplies in a 1+1 configuration. An 870W high-output power supply is also available. The power supplies
connect directly to the planar.
There is a power cable to connect between the planar and the backplane. PowerEdge R710 power
supplies have embedded cooling fans.
Starting with the 11th generation of PowerEdge servers (R710, R610, T610, M610, and M710), the
power supplies no longer have a FRU EEPROM. FRU data is now stored in the memory of the PSU
Microcontroller. Additionally, the PSU Firmware can now be updated by the BMC over the PMBus.
Power is “soft-switched,” allowing power cycling via a switch on the front of the system enclosure, or
via software control (through server management functions). In a single power supply configuration,
the power supply is installed in the PS1 location and a blank module (metal cover) is installed in the
PS2 location for factory consistency. Electrically, the system can operate with a single power supply in
either bay.
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