Thermal restrictions
Following table lists the configuration required for efficient cooling.
Table 30. Thermal restrictions configuration
Configuration
Number of
processors
Heatsink
Processor/DIMM
blank
DIMM
blanks
Type of air
shroud
Fan
PowerEdge
R740
1
One 1U standard heat sink for
CPU ≤ 125 W
Required
Not
required
Standard
Four standard
fans and one
blank to cover
two fan slots
One 2U standard heat sink for
CPU > 125 W
PowerEdge
R740
2
Two 1U standard heat sink for
CPU ≤ 125 W
Not required
Not
required
Standard
Six standard fans
Two 2U standard heat sink for
CPU > 125 W
PowerEdge
R740 with GPU
2
Two 1U high performance
heat sink
Not required
Not
required
GPU air shroud
Six high
performance
fans
Ambient temperature limitations
The following table lists configurations that require ambient temperature less than 35°C.
NOTE:
The ambient temperature limit must be adhered to ensure proper cooling and to avoid excess CPU throttling, which may
impact system performance.
Table 31. Configuration based ambient temperature restrictions
System
Front backplane
CPU Thermal
Design Power
(TDP)
CPU heat sink
Fan type
GPU
Ambient
restriction
PowerEdge
R740
8 x 3.5 inch SAS/
SATA
150 W/8 core, 165
W/12 core, 200
W, 205 W
1U high
performance
High performance
fan
≥1 double-width/
single-width
30°C
8 x 2.5 inch SAS/
SATA
150 W/8 core, 165
W/12 core, 200
W, 205 W
1U high
performance
High performance
fan
≥1 double-width/
single-width
30°C
16 x 2.5 inch SAS/
SATA
150 W/8 core, 165
W/12 core, 200
W, 205 W
1U high
performance
High performance
fan
≥1 double-width/
single-width
30°C
Particulate and gaseous contamination specifications
The following table defines the limitations that help avoid any equipment damage or failure from particulate and gaseous contamination. If
the levels of particulate or gaseous pollution exceed the specified limitations and result in equipment damage or failure, you may need to
rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer.
Dell EMC PowerEdge R740 Installation and Service Manual
Technical specifications
35
