Environmental Specifications; Thermal; Power Supply Specifications - Dell External OEMR R910 Technical Manual

Dell
AC Power supply (per power supply)
Wattage
Voltage
Heat dissipation
Maximum inrush current

6.2 Environmental Specifications

Airborne Contaminant Level: Class G2 or lower as defined by ISA-S71.04-1985
For additional information about environmental measurements for specific system configurations, see
Product Safety, EMC, and Environmental Datasheets

6.3 Thermal

The R910 thermal solution includes:

Optimized airflow impedance for optimum cooling efficiency

Custom air baffling directs airflow through the components to maintain proper cooling

Custom designed heat sinks maintain CPU, IOH, and Mill Brook chip temperatures within
thermal design targets

Highly Optimized Fan Control Algorithm
o Base fan speeds are a function of hardware configuration and ambient temperature to
minimize airflow for a given environment.
o PID control algorithms are used for both CPU and DIMMs to maintain appropriate
thermal margin
o Double refresh switching allows for DIMM temperature excursions up to 95°C while
maintaining performance and thermal design targets

The R910 thermal algorithm monitors the thermal sensor on each DIMM to maintain
DIMM temperatures below the typical 85°C specification in normal operating
conditions.

Under extreme operating conditions the thermal algorithm can switch the DIMMs
into Double Refresh mode allowing an additional 10°C of thermal headroom. In
Double Refresh mode DIMMs are allowed to operate as high as 95°C.
Dell PowerEdge R910 Technical Guide

Power Supply Specifications

Table 4.
1100 W (High Output PSU)
750 W (Energy Smart PSU)
90–264 V, 47–63 Hz, auto-ranging
8407 BTU/hr maximum (with two or four
1100 W PSUs)
5732 BTU/hr maximum (with two or four
750W PSUs)
Under typical line conditions and over the
entire system ambient operating range, the
inrush current may reach 55 A per power
supply for 10 ms or less
on Dell.com.
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