Dell PowerEdge MX740c EMC PowerEdge MX740c Installation and Service Manual - Page 127
Thermal, Expanded operating temperature restrictions
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Table 29. 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 30. Thermal restriction matrix Ambient Support 25 ° C CPU No restriction 30 ° C No restriction 35 ° C No restriction (The recommended operating temperature for processors with Thermal Design Power (TDP) > 165W is under 32°C) 40 ° C ~ 45 ° C Expanded Operating Temperature Does not support processor with TDP > 140W Does not Support Gold 6146 Gold 6144 Gold 6134 Gold 6132 Gold 6128 Gold 5122 No support for 6234(130W8c), 5217(115W8c) and 5222(105W4c) processors. DIMM No restriction No restriction No restriction Does not support NVDIMM Technical specifications 127
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