Power Supply Units - Dell PowerEdge R830 Owner's Manual

NOTE: Do not over-tighten the heat sink retention screws when installing the heat sink. To prevent over-tightening,
tighten the retention screw until resistance is felt, and stop after the screw is seated. The screw tension should not
be more than 6 in-lb (6.9 kg-cm).
6. Repeat the procedure for the remaining two screws.
Figure 37. Installing the heat sink
1. retention screw (4)
3. processor shield
Next steps
1. Follow the procedure listed in the After working inside your system section.
2. While booting, press F2 to enter System Setup and verify that the processor information matches the new system
configuration.
3. Run the system diagnostics to verify that the new processor operates correctly.
Related links
Safety instructions
Before working inside your system
Installing a processor
After working inside your system

Power supply units

Your system supports two hot swappable 750 W or 1600 W AC power supply units (PSUs). If two PSUs are used, they must be of
the same maximum output power.
CAUTION: For AC PSUs, use only PSUs with the Extended Power Performance (EPP) label on the back. Mixing PSUs
from previous generations of systems can result in a PSU mismatch condition or failure to turn on.
NOTE: If a system with 1600 W PSUs operates from 100 V to 120 V, then the power rating per PSU is derated to 800 W.
NOTE: When two identical PSUs are installed, power supply redundancy (1+1 – with redundancy or 2+0 – without
redundancy) is configured in system BIOS. In redundant mode, power is supplied to the system equally from both PSUs
when Hot Spare is disabled. When Hot Spare is enabled, one of the PSUs will be put into standby when system utilization
is low to maximize efficiency.
2. heat sink
4. retention screw slot (4)
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