AMD OPTERON 30925 - Manual (Page 31)

30925 Rev. 3.04 February 2004 Builder’s Guide for AMD Opteron™ Processor-
Based Servers and Workstations
Chapter 5 Hardware Considerations 31
Figure 22 on page 31 shows undesirable airflow through a chassis. Both undesirable
configurations use a front-inlet power supply.
Figure 22. Undesirable Airflow—Power Supply with Front Inlet Only
5.2 Power Supply Guidelines
AMD Opteron processor-based motherboards may be designed to leverage industry standard
power supplies. The selection of the proper system-power supply is a critical element to the
success of the finished system. For best results, a system builder should always contact the
motherboard, power supply, and chassis suppliers or vendors to verify that each of the chosen
components supports the desired system configuration, and a system builder should verify that
support through internal testing and validation.
5.2.1 Server and Workstation Platform Power Supplies
Depending on the motherboard vendors’ design requirements, the server/workstation can use
either an ATX 12-V power supply, or an EPS12V. The motherboard design can use one or two
power connectors. Usually a separate power connector is used to provide power for the I/O
components. It is important that you confirm with the motherboard manufacturer the exact
connector requirements.
Note: It is imperative that system builders ensure that the power supply of choice and the selected
chassis are mechanically compatible.