Dell POWEREDGE R710 - Manual (Page 14)

Dell™ PowerEdge™ R710 Technical Guidebook
14
sectiOn 4. POWeR, theRmal, acOustic
a. Power efficiencies
One of the main features of the 11th generation of PowerEdge servers is enhanced power efficiency.
PowerEdge R710 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
• 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 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 off 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 efficient) 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.