Intel EP80579 User Manual

Development Kit User’s Guide
October 2008 Order Number: 320067-002US
47
Technical Reference—Intel
®
EP80579 Integrated Processor with Intel
®
QuickAssist Technology
4.10 Electrical Considerations
4.10.1 DC Loading
Table 30 lists the DC loading characteristics of the Intel
®
EP80579 Development Board.
This data is based on DC analysis of all the active components within the Intel
®
EP80579 Development Board that impact its power delivery subsystems. The analysis
does not include PCI Express add-in cards.
Minimum load values assume a light load placed on the Intel
®
EP80579 Development
Board that is similar to an environment with basic OS (operating system), idled at the
platform, and no applications running.
Maximum load values in Table 30 indicate the Intel
®
EP80579 Development Board runs
with four add-on network cards via PCIe and onboard network ports all transferring
files. Also Burn in program was running with multiple instances of memory test
running.
The values are not based on specific SKU or memory configurations, but are based on
the minimum and maximum current draw possible from power delivery subsystem to
processor, memory and external interfaces.
See the Intel
®
EP80579 Integrated Processor Product Line Datasheet for the overall
system power requirements of the add-in cards. The selection of power supply at the
system level is dependent on the system’s usage model and not necessarily tied to a
particular SKU of the EP80579 Processor.
4.10.2 PCI Express Add-in Connector Considerations
The Intel
®
EP80579 Development Board is designed to provide 2 amps (average
current drain) to each add-in connector, for both the +3.3V and +12V supplies. The
maximum current drawn by the add-in connector for a fully loaded board (all five PCIe
connectors filled) must not exceed 10A for both the +3.3V and +12V supplies.
Table 30. DC Loading Characteristics Mode
Voltage Rails +3.3 V +5 V +12 V -12 V +5 VSB
Minimum
Loading
DC Current
(Amps)
2.98 3.72 1.23 0 .75
Power
(Watts)
10.1 19.4 14.6 0 3.7
Maximum
Loading
DC Current
(Amps)
5.31 5.46 1.26 .03 1.15
Power
(Watts)
17.8 28.4 15.3 0.5 5.8
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Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English