Owners Manual

Table 15. Expanded operating temperature specifications (continued)
Expanded operating temperature Specifications
NOTE: Outside the standard operating temperature (10°C–35°C),
the system can operate down to –5°C or up to 45°C for a
maximum of 1% of its annual operating hours.
For temperatures 40°C–45°C, derate maximum allowable temperature
by 1°C per 125 m above 950 m (1°F per 228 ft).
NOTE: When operating in the expanded temperature range, system performance may be impacted.
NOTE: When operating in the expanded temperature range, ambient temperature warnings maybe reported on the LCD
panel and in the System event log.
Expanded operating temperature restrictions
1. Do not perform a cold startup below 5°C.
2. The operating temperature that is specified is for a maximum altitude of 3050 m(10,000 ft).
3. Low core count processors [Gold 6146,6144,6134,6128,5222,5217,5122] and higher wattage processors [Thermal Design
Power (TDP)>140 W] are not supported.
4. Non-Dell qualified peripheral cards or peripheral cards greater than 30 W are not supported.
5. PCIe SSD is not supported.
6. NVDIMM are not supported.
7. DCPMMs are not supported.
Thermal
PowerEdge servers have an extensive collection of sensors that automatically track thermal activity, which helps regulate
temperature thereby reducing server noise and power consumption. The sensors in the MX740c interact with the chassis
management services module which regulates fan speed. All fans which cool the MX740c are contained in the MX7000 chassis.
Thermal management of PowerEdge MX740c delivers high performance for the right amount of cooling to components at the
lowest fan speeds across a wide range of ambient temperatures from 10°C to 35°C (50°F to 95°F) and to extended ambient
temperature ranges (see Environmental Specifications section). The benefits to you are lower fan power consumption (lower
server system power and data center power consumption) and greater acoustical versatility.
For detailed information about thermal please consult the MX7000 Technical Guide.
Table 16. Thermal restriction matrix
Ambient Support 25 ° C 30 ° C 35 ° C 40 ° C ~ 45 ° C
Expanded Operating
Temperature
CPU No restriction No restriction No restriction
(The recommended
operating temperature
for processors with
Thermal Design Power
(TDP) > 165W is under
32°C)
Not Supported for the
below SKUs:
CLX R 205W, x6 BP
(6258R, 6248R, 6246R,
6242R) on MX740c
Does not support CPU
with TDP> 140W
No Support: Gold
6132(140W 14C), Gold
6134(130W 8C), Gold
6128(115W 6C), Gold
5122(105W
4C)processors
6234(130W 8C),
5217(115W
8C),5222(105W 4C)
processors
DIMM No restriction No restriction No restriction Does not support
NVDIMM
10 Technical specifications