Dell PowerEdge M915 Technical Guide - Page 20

Dell 5 Power, Thermal, Acoustic 5.1 Power Supplies See the PowerEdge M1000e Technical Guide for information on power supplies and power supply specifications. 5.2 Power Efficiency One of the main features of blade servers is enhanced power efficiency. The M915 achieves higher power efficiency by implementing the following features:  User-configurable power options with the M1000e Chassis Management Controller (CMC) (see M1000e documentation online at Support.Dell.com for further details)  Improved power budgeting  VR efficiency improvements (using switching regulators instead of linear regulators)  Closed-loop thermal throttling  Use of LV DDR3 memory (lower voltage compared to DDR2)  BIOS Power/Performance options page  Active Power Controller (BIOS-based CPU P-state manager)  Ability to throttle memory  Ability to disable a processor core  Ability to turn off embedded NICs or PCIe lanes when not being used  Energy Smart components at the M1000e chassis level to selectively enable more computing performance with less power consumption. 5.3 Environmental Specifications Table 3. Environmental Specifications Temperature Operating Storage Relative Humidity Operating Storage Maximum Vibration Operating Storage Maximum Shock Operating 10°C to 35°C (50°F to 95°F) with a maximum temperature gradation of 10°C per hour Note: For altitudes above 2950 feet, the maximum operating temperature is derated 1oF/500ft -40°C to 65°C (-40°F to 149°F) with a maximum temperature gradation of 20°C per hour 20% to 80% (noncondensing) with a maximum humidity gradation of 10% per hour 5% to 95% (noncondensing) with a maximum humidity gradation of 10% per hour 0.26Grms at 5-350Hz in operational orientations 1.54Grms at 10-250Hz in all orientations Half sine shock in all operational orientations of 31G +/- 5% with a pulse duration of 2.6ms +/- 10% PowerEdge M915 Technical Guide 20