Intel SBT2 Product Guide - Page 77

Current Usage, Calculating Power Consumption, The cooling efficiency varies per slot; therefore

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Current Usage  NOTE Both processors pull power from +5V. This may limit the number of drives and/or add-in cards you may install. As an overall current usage limitation on the power supply, do not exceed a combined power output of 195 watts for the +5 and +3.3 volt outputs. The PCI slots on the server board are rated at a maximum of 5 amperes per slot. The maximum power allowed for each slot is 20 watts at +5 volts. The average current usage per slot should not exceed 3.0 amperes per slot; that is, 15 watts. The cooling efficiency varies per slot; therefore, ensure that adequate cooling is available in the target slot-especially in an expansion slot drawing more than 2.0 amperes. Calculating Power Consumption The total combined wattage for the system configuration must be less than the output of your power supply. Use the two worksheets in this section to calculate the power used by your server boards. For current and voltage requirements of add-in boards and peripherals, see your vendor documents. SBT2 Server Board Product Guide 77

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SBT2 Server Board Product Guide
77
Current Usage
NOTE
Both processors pull power from +5V.
This may limit the number of drives
and/or add-in cards you may install.
As an overall current usage limitation on the power supply, do not exceed a combined power output
of 195 watts for the +5 and +3.3 volt outputs.
The PCI slots on the server board are rated at a maximum of 5 amperes per slot.
The maximum
power allowed for each slot is 20 watts at +5 volts.
The average current usage per slot should not
exceed 3.0 amperes per slot; that is, 15 watts.
The cooling efficiency varies per slot; therefore, ensure that adequate cooling is available in the
target slot—especially in an expansion slot drawing more than 2.0 amperes.
Calculating Power Consumption
The total combined wattage for the system configuration must be less than the output of your power
supply.
Use the two worksheets in this section to calculate the power used by your server boards.
For current and voltage requirements of add-in boards and peripherals, see your vendor documents.