Specifications

Figure 7 shows a 350W power supply unit extended from the R320 chassis.
The PowerEdge R320 supports up to two AC with 1+1 redundancy, auto-sensing, and
auto-switching capability.
To support Intel turbo boost feature (default enabled in BIOS), system with 95W processors (8-core
or 6-core) and 350W cabled PSU may not be sufficient to support feature rich configurations. For
feature rich configurations, using a 350W or 550W dual-redundant PSU is recommended in addition
to verifying energy efficiency configurations using the Dell Energy Smart Solution Advisor at
Dell.com/ESSA.
Dell PSUs have achieved Platinum efficiency levels as shown in Table 17.
Form factor
Output
Class
Efficiency targets by load
10%
20%
50%
100%
Redundant 51.3mm
350W AC
Platinum
82.0%
90.0%
94.0%
91.0%
Redundant 51.3mm
550W AC
Platinum
82.0%
90.0%
94.0%
91.0%
Non-redundant
350W AC
Bronze
N/A
85.0%
85.0%
85.0%
Optimized thermal management makes the PowerEdge R320 cool and quiet. Benefiting from smart
cooling fan speed control, the R320 can keep both high performance and good acoustics across a
wide range of ambient temperatures from 10°C to 35°C (50°F to 95°F) and to extended ambient
temperature ranges (see Table 26). Operating environments for the R320 can vary from the data
center to general-use spaces. In a typical configuration, the R320 is suitable for an open office
environment.
The thermal design of the PowerEdge R320 reflects the following:
 Multiple sensors are monitored for thermal feedback control: The PowerEdge R320
dynamically controls system cooling fan speed based on responses from component
temperature sensors, including processors, hard disk drives, DIMMs, storage cards, and the inlet
ambient temperature. Thermal control detects and responds to hardware configuration. Thermal