Dell PowerEdge T620 Technical Manual page 32

Figure 9 shows a 750W power supply extended from the T620 chassis.
The PowerEdge T620 supports up to two AC or DC power supplies with 1 + 1 redundancy,
auto-sensing, and auto-switching capability.
Dell PSUs have achieved Platinum efficiency levels as shown in Table 20.
Form factor Output
495W AC
750W AC
Redundant 86mm
1100W AC
1100W DC
1
Available Q2 2012
Optimized thermal management makes the PowerEdge T620 cool and quiet. Benefiting from smart
cooling fan speed control, the T620 can keep both high performance and low 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 31). A typically configured T620 is quiet enough for an office
environment, and a minimally configured T620 is quiet enough for a library.
The thermal design of the PowerEdge T620 reflects the following:
Multiple sensors are monitored for thermal feedback control: The PowerEdge T620 dynamically

controls system cooling fan speed based on responses from all component temperature sensors,
including processors, hard disk drives, DIMMs, storage cards, and the inlet ambient temperature.
The thermal control also detects and responds to hardware configuration. The thermal
Class
Platinum
Platinum
Platinum Plus
1
Gold
Efficiency targets by load
10% 20%
82.0% 90.0%
82.0% 90.0%
89.0% 93.0%
80.0% 88.0%
50% 100%
94.0% 91.0%
94.0% 91.0%
94.5% 92.0%
92.0% 88.0%