Dell EMC PowerEdge R740 Installation And Service Manual page 41

• Do not perform a cold startup below 5°C.
• The operating temperature specified is for a maximum altitude of 3050 m (10,000 ft).
• 150 W/8 core, 165 W/12 core and higher wattage processor [Thermal Design Power (TDP)>165 W] are not supported.
• Redundant power supply unit is required.
• Non-Dell qualified peripheral cards and/or peripheral cards greater than 25 W are not supported.
• PCIe SSD is not supported.
• NVDIMM-Ns are not supported.
• GPU is not supported.
• Tape backup unit is not supported.
Thermal restrictions
Following table lists the configuration required for efficient cooling.
Table 33. Thermal restrictions configuration
Configuration Number of
processors
PowerEdge 1
R740
PowerEdge 2
R740
PowerEdge 2
R740 with GPU
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 34. Configuration based ambient temperature restrictions
System Front backplane
PowerEdge 8 x 3.5 inch SAS/
R740 SATA
8 x 2.5 inch SAS/
SATA
Heatsink
One 1U standard heat sink for
CPU ≤ 125 W
One 2U standard heat sink for
CPU > 125 W
Two 1U standard heat sink for
CPU ≤ 125 W
Two 2U standard heat sink for
CPU > 125 W
Two 1U high performance
heat sink
CPU Thermal
Design Power
(TDP)
150 W/8 core, 165
W/12 core, 200
W, 205 W
150 W/8 core, 165
W/12 core, 200
W, 205 W
Processor/DIMM
blank
Required
Not required
Not required
CPU heat sink Fan type
1U high High performance
performance fan
1U high High performance
performance fan
DIMM Type of air
blanks shroud
Not Standard
required
Not Standard
required
Not GPU air shroud
required
GPU
≥1 double-width/
single-width
≥1 double-width/
single-width
Technical specifications
Fan
Four standard
fans and one
blank to cover
two fan slots
Six standard fans
Six high
performance
fans
Ambient
restriction
30°C
30°C
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