Dell PE R720XD Owner's Manual page 138

Environmental
NOTE: For additional information about environmental measurements for specific system configurations, see
dell.com/environmental_datasheets.
Standard Operating Temperature
Expanded Operating Temperature
< 10% of annual operating hours
< 1% of annual operating hours
Expanded Operating Temperature Restrictions
138
Continuous operation: 10 °C to 35 °C at 10% to 80%
relative humidity (RH), with 26 °C max dew point. De-rate
maximum allowable dry bulb temperature at 1 °C per 300
m above 900 m (1 °F per 550 ft).
NOTE: When using PowerEdge R720 with internal
GPU card(s), the continuous operation range is 10 °C
to 30 °C at 10% to 80% RH, with 26 °C max dew point.
NOTE: When operating in the expanded temperature
range, system performance may be impacted.
NOTE: When operating in the expanded temperature
range, ambient temperature warnings may be
reported on the LCD and in the System Event Log.
5 °C to 40 °C at 5% to 85% RH with 26 °C dew point.
NOTE: Outside the standard operating temperature
(10 °C to 35 °C), the system can operate down to 5 °C
or up to 40 °C for a maximum of 10% of its annual
operating hours.
For temperatures between 35 °C and 40 °C, de-rate
maximum allowable dry bulb temperature by 1 °C per 175
m above 950 m (1 °F per 319 ft).
–5 °C to 45 °C at 5% to 90% RH with 26 °C dew point.
NOTE: Outside the standard operating temperature
(10 °C to 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 between 40 °C and 45 °C, de-rate
maximum allowable dry bulb temperature by 1 °C per 125
m above 950 m (1 °F per 228 ft).
• Do not perform a cold startup below 5 °C.
• The operating temperature specified is for a
maximum altitude of 3050 m (10,000 ft).
• PCIe SSD is not supported.
• GPU is not supported.
• LRDIMM is not supported.
• 130 W (4 core) processor is not supported.
• Redundant power supplies are required.
• Non Dell qualified peripheral cards and/or
peripheral cards greater than 25 W are not
supported.