Dell EMC PowerEdge R740xd - Particulate and Gaseous Contamination Specifications

Table 35. NIC card slot restrictions
System Configuration Slot restriction Ambient restriction
PowerEdge R940 Eight 2.5-inch hard drive
system
Slots 1, 5, and 6 do not
support NIC cards
35°C
Twenty four 2.5-inch hard
drive system
Slots 1, 5, and 6 do not
support NIC cards
35°C
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 36. Configuration based ambient temperature restrictions
System Backplane Processor
Thermal Design
Power (TDP)
Processor heat
sink
Fan type GPU Ambient
restriction
PowerEdge
R740xd
12 x 3.5 inch SAS/
SATA + 4 x 3.5
inch + 2 x 3.5 inch
150 W/8 core,
165 W/12 core,
200 W, 205 W
1U high
performance
High
performance fan
N/A 25°C
24 x 2.5 inch SAS/
SATA + 4 x 2.5
inch + 4 x 2.5 inch
N/A 25°C
24 x 2.5 inch SAS/
SATA
All 30°C
24 x NVMe All except V100
32 GB
30°C
22 x NVMe V100 32 GB 25°C
Table 37. Configuration based ambient temperature restrictions
System Front drive
configuration
Processor Thermal
Design Power (TDP)
Processor count and
Memory
Ambient Restriction
PowerEdge R940 Any 150 W/8 core, 165 W/12
core, 200 W, 205 W
Any 35°C
NVMe Any Any 35°C
Any Any 4 CPUs with DCPMMs 35°C
Any Any Any number of CPUs
with NVDIMMs
35°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.
Table 38. Particulate contamination specifications
Particulate contamination Specifications
Air filtration Data center air filtration as defined by ISO Class 8 per ISO 14644-1 with a
95% upper confidence limit.
NOTE: The ISO Class 8 condition applies to data center
environments only. This air filtration requirement does not apply
Technical specifications 39