Dell R710 Technical Guide - Page 25

Dell 5.7 Maximum Input Amps Maximum input current (High Output-870W):  12 A @ 90 VAC  6 A @ 180 VAC Maximum input current (Energy Smart-570W):  7.8 A @ 90 VAC  3.9 A @ 180 VAC 5.8 Energy Smart Enablement The 11G family of PowerEdge servers implements aspects of Dell's Energy Smart strategy. This strategy offers the following:  Energy Smart components on a portfolio level, such as high-capacity and Energy Smart power supplies  Systems with either a lowest power footprint configuration or a best performance per watt configuration  Energy Smart components (such as DIMMs or hard drives) selected without cherry picking or screening individual manufacturer's components based on energy consumption 5.9 Energy Star Compliance ENERGY STAR® qualified configurations can be accessed from the ENERGY STAR Compliance results landing page on Dell.com. 5.10 Acoustics The acoustical design of the PowerEdge R710 reflects adherence to Dell's high sound quality standards. Sound quality is different from sound power level and sound pressure level in that it describes how humans respond to annoyances in sound, like whistles, hums, etc. One of the sound quality metrics in the Dell specification is prominence ratio of a tone as shown in Table 7. Table 7. Acoustical Performance Typical Configuration @ 23 ± 2 °C CPUs HDDs Power Optical Supplies Drive 2 4 2 1 Operating Mode Idle Stressed LWA-UL LpA (Bels) (dBA) 5.5 39 5.9 42 Prominent Tones None None The acoustical specification for the R710 is Category II-D. Definitions Idle: Reference ISO7779 (1999) definition 3.1.7; system is running in its OS but no other specific activity. Stressed Processor: An operating mode per ISO7779 (1999) definition 3.1.6. The software SPECPower_ssj2008 is utilized to stress the processors. SPECPower is set to 50% loading. LwA - UL: The upper limit sound power level (LwA) calculated per section 4.4.2 of ISO 9296 (1988) and measured in accordance to ISO 7779 (1999). PowerEdge R710 Technical Guide 25