Intel DQ965WC Product Specification - Page 64

Electrical Considerations

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Intel Desktop Board DQ965WC Technical Product Specification 2.10 Electrical Considerations 2.10.1 DC Loading Table 31 lists the DC loading characteristics of the board. This data is based on a DC analysis of all active components within the board that impact its power delivery subsystems. The analysis does not include PCI add-in cards. Minimum values assume a light load placed on the board that is similar to an environment with no applications running and no USB current draw. Maximum values assume a load placed on the board that is similar to a heavy gaming environment with a 500 mA current draw per USB port. These calculations are not based on specific processor values or memory configurations but are based on the minimum and maximum current draw possible from the board's power delivery subsystems to the processor, memory, and USB ports. Use the datasheets for add-in cards, such as PCI, to determine the overall system power requirements. The selection of a power supply at the system level is dependent on the system's usage model and not necessarily tied to a particular processor speed. Table 31. DC Loading Characteristics Mode DC Power Minimum loading 86.13 W Maximum loading 255.91 W +3.3 V 1.57 A 4.80 A +5 V 1.86 A 9.71 A DC Current at: +12 V -12 V 5.53 A 0.00 A 15.52 A 0.00 A +5 VSB 1.06 A 1.06 A 2.10.2 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 32 lists the current capability of the fan headers. Table 32. Fan Header Current Capability Fan Header Processor fan Front chassis fan Rear chassis fan Maximum Available Current 3.0 A 1.5 A 1.5 A 2.10.3 Add-in Board Considerations The board is designed to provide 2 A (average) of +5 V current for each add-in board. The total +5 V current draw for add-in boards for a fully loaded board (the PCI Express x16 connector filled) must not exceed 2 A. 64

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Intel Desktop Board DQ965WC Technical Product Specification
64
2.10
Electrical Considerations
2.10.1
DC Loading
Table 31 lists the DC loading characteristics of the board.
This data is based on a DC
analysis of all active components within the board that impact its power delivery
subsystems.
The analysis does not include PCI add-in cards.
Minimum values assume
a light load placed on the board that is similar to an environment with no applications
running and no USB current draw.
Maximum values assume a load placed on the
board that is similar to a heavy gaming environment with a 500 mA current draw per
USB port.
These calculations are not based on specific processor values or memory
configurations but are based on the minimum and maximum current draw possible
from the board’s power delivery subsystems to the processor, memory, and USB
ports.
Use the datasheets for add-in cards, such as PCI, to determine the overall system
power requirements.
The selection of a power supply at the system level is dependent
on the system’s usage model and not necessarily tied to a particular processor speed.
Table 31. DC Loading Characteristics
DC Current at:
Mode
DC Power
+3.3 V
+5 V
+12 V
-12 V
+5 VSB
Minimum loading
86.13 W
1.57 A
1.86 A
5.53 A
0.00 A
1.06 A
Maximum loading 255.91 W
4.80 A
9.71 A
15.52 A
0.00 A
1.06 A
2.10.2
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 32 lists the current capability of the fan headers.
Table 32. Fan Header Current Capability
Fan Header
Maximum Available Current
Processor fan
3.0 A
Front chassis fan
1.5 A
Rear chassis fan
1.5 A
2.10.3
Add-in Board Considerations
The board is designed to provide 2 A (average) of +5 V current for each add-in board.
The total +5 V current draw for add-in boards for a fully loaded board (the PCI Express
x16 connector filled) must not exceed 2 A.