Dell PowerEdge T620 Owner's Manual page 132

Environmental
< 1% of annual operating hours
Expanded Operating Temperature Restrictions
Storage Temperature
132
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).
• You must have six fans configured on your
system.
• Do not perform a cold startup below 5 °C.
• The operating temperature specified is for a
maximum altitude of 3050 m (10,000 ft).
• Express Flash is not supported.
• GPU is not supported.
• LRDIMM is not supported.
• 130 W 4 Core processor, 135 W processors, and
150 W processors are not supported.
• Non-redundant power supplies are not
supported.
• Non Dell qualified peripheral cards and/or
peripheral cards greater than 25 W are not
supported.
–40 °C to 65 °C (–40 °F to 149 °F) with a maximum
temperature gradation of 20 °C per hour.