Pcie Slot-To-Processor Mapping - Lenovo ThinkSystem SR950 Setup Manual

Table 1. Server Specifications (continued)
Specification
Heat output
Environment

PCIe slot-to-processor mapping

The following table shows the connectivity between processors and PCIe slots in the server. In situations
where multiple risers can be installed (such as for PCIe adapter slots 1 and 2, the table shows the processor
connectivity based on each of the riser options.
8
ThinkSystem SR950 Setup Guide
Description
Approximate heat output:
• Minimum configuration: 935 BTU, 275 W (in BTU per hour and watts)
– Minimum configuration of two microprocessors, two memory modules, one M.2
adapter, and no PCIe adapters.
• Maximum configuration: 21837 BTU, 6400 W (in BTU per hour and watts)
– Maximum configuration with four 1600-watt power supplies configured for non-
redundant operation under maximum loading.
• Air temperature:
– Server on: 5° to 45°C (41° to 113°F); altitude: 0 to 3050 m (10,006 ft) derate
maximum dry bulb temperature 1°C (33°F) per 125 m (410 ft) above 950 m
(3,117 ft). Maximum rate of change 20°C (68°F) per hour
– Server off: 5° to 45°C (41° to 113°F)
– Shipment: -40°C to 60°C (-40°F to 140°F)
• Humidity range (noncondensing):
– Server on: Minimum = higher (more moisture) of -12°C (10°F) dew point and 8%
to 90% relative humidity; maximum dew point: 24°C (75°F)
– Server off: 8% to 90% relative humidity; maximum dew point: 27°C (80°F)
– Shipment: 5% to 100%
Notes:
• Airborne particulates and reactive gases acting alone or in combination with other
environmental factors such as humidity or temperature might pose a risk to the
server. For information about the limits for particulates and gases, see
contamination .
• ASHRAE compliance information (see the "Operating Environment" section of
Lenovo ThinkSystem SR950 Product Guide at http://lenovopress.com/LP0647
specific ASHRAE compliance levels for each server configuration):
– The server is designed for thermal compliance in ASHRAE A4 ambient
environments. Certain processor and adapter configurations will limit product
environmental support to ASHRAE A2 ambient conditions.
– If 82xx processors are installed, 60 mm x 38mm, 19K internal hot-swap fans
(01PG490) must also be installed to meet CPU cooling requirements at 35°C.
– 205W processors used in an eight-socket configuration might experience a
slight drop in performance under extreme workloads when the ambient
temperature is above 30°C.
– NVMe devices are supported up to an ambient temperature of 35°C.
Particulate
the
for