System Battery Specifications; Expansion Bus Specifications; Memory Specifications - Dell Precision 7920 Rack Owner's Manual

Table 4. PSU specifications
PSU Class
1100 W AC Platinum
1600 W AC Platinum
NOTE: Heat dissipation is calculated using the PSU wattage rating.
NOTE: This system is also designed to connect to the IT power systems with a phase to phase voltage not exceeding 230
V.
NOTE: If a system with 1600 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to
800 W.

System battery specifications

The Precision 7920 Rack system supports CR 2032 3.0-V lithium coin cell system battery.

Expansion bus specifications

The Precision 7920 Rack system supports up to eight PCI express (PCIe) generation 3 expansion cards, that can be installed on
the system board using expansion card risers. The following table provides detailed information about the expansion card riser
specifications:
Table 5. Expansion card riser configurations
Expansion PCIe slots on
card riser the riser
Riser 1C Slot 1
Slot 2
Slot 3
Riser 2A Slot 4
Slot 5
Slot 6
Riser 3A Slot 7
Slot 8

Memory specifications

Table 6. Memory specifications
Features
Minimum memory configuration
Maximum memory configuration
Number of slots
Maximum memory supported per slot
Memory options
Heat dissipation
(maximum)
4100 BTU/hr
6000 BTU/hr
Height Length
Full Height Full Length
Full Height Full Length
Full Height Half Length
Full Height Full Length
Full Height Full Length
Low Profile Half Length
Full Height Full Length
Full Height Full Length
Frequency Voltage
50/60 Hz 100–240 V AC, autoranging
50/60 Hz 100–240 V AC, autoranging
Link
x16
x8
x8
x16
x8
x8
x8
x16
Specifications
8 GB
3072 GB
24
128 GB
● 1DPC (One DIMM per channel)
● 2DPC (Two DIMM per channel)
Current
12 A–6.5 A
10 A
CPU
CPU1
CPU1
CPU1
CPU2
CPU2
CPU1
CPU2
CPU2
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