Intel Desktop Board DQ87PG Technical Product Specification
64
For example, for a low power system consisting of a supported 45 W processor (see
Section 1.3 on page 16 for a list of supported processors), 2 GB DDR3 RAM, integrated
graphics, one SSD, one optical drive, and no extra onboard peripherals enabled, the
minimum recommended power supply is a 320 W. Table 32 lists possible
recommended power supply current rail values. Note: If the correct power supply and
system configuration is used, a smaller power supply will work.
Table 32. Recommended Power Supply Current Values (Low Power)
Output Voltage 3.3 V 5 V 12 V1 12 V2 -12 V 5 VSB
Current 20 A 20 A 15 A 15 A 0.3 A 1.5 A
For information about Refer to
Selecting an appropriate power supply http://support.intel.com/support/motherboards/desktop/sb
/CS-026472.htm
Selecting a power supply capable of
supporting the 4
th
generation Intel Core
processor
http://www.intel.com/go/powersupplies/
2.6.2 Fan Header Current Capability
CAUTION
The processor fan must be connected to the processor fan header, not to a chassis fan
header. Connecting the processor fan to a chassis fan header may result in onboard
component damage that will halt fan operation.
Table 33 lists the current capability of the fan headers.
Table 33. Fan Header Current Capability
Fan Header Maximum Available Current
Processor fan 2.0 A
Front chassis fan 1.5 A
Rear chassis fan 1.5 A
2.6.3 Add-in Board Considerations
The board is designed to provide 2 A (average) of current for each add-in board from
the +5 V rail. The total +5 V current draw for add-in boards for a fully loaded board
(all three expansion slots filled) must not exceed the system’s power supply +5 V
maximum current or 14 A in total.
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