Premio-computer Apollo/Shadowhawk Manual do Utilizador descarregar pdf (Página 103)

Intel Desktop Board D845HV/D845WN Technical Product Specification

2.11 Electrical Considerations

2.11.1 Power Consumption

Table 50 lists voltage and current measurements for a computer that contains the

D845HV/D845WN board and the following:

• 1.7 GHz Intel Pentium 4 processor with a 256 KB cache

• 256 MB SDRAM

• 3.5-inch diskette drive

• 20 GB IDE hard disk drive

• 32X IDE CD-ROM drive

This information is provided only as a guide for calculating approximate power usage with

additional resources added.

Values for the Windows 98SE desktop mode are measured at 640 x 480 x 256 colors and 60 Hz

refresh rate. AC watts are measured with the computer is connected to a typical 250 W power

supply, at nominal input voltage and frequency, with a true RMS wattmeter at the line input.

✏ NOTE

Actual system power consumption depends upon system configuration. The power supply should

comply with the recommendations found in the ATX / ATX12V Power Supply Design Guide,

Version 1.1 (see Section 1.5 on page 18 for specification information).

Table 50. Power Usage

DC Current at:

Mode AC Power +3.3 V +5 V +12 V -12 V +5 VSB

ACPI S0 163 W 11.5 A 4.0 A 7.6 A 1.0 A 0.200 A

ACPI S1 26 W 4.7 A 0.008 A 0.750 A 0.038 A 0.164 A

ACPI S3 2 W 0.0 A 0.0 A 0.0 A 0.0 A 0.394 A

2.11.2 Add-in Board Considerations

The D845HV and D845WN boards are 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 is as follows:

• For a fully loaded D845HV board (all four expansion slots filled), the total +5 V current draw

must not exceed 8 A.

• For a fully loaded D845WN board (all seven expansion slots filled), the total +5 V current

draw must not exceed 14 A.

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 152 153

Sem comentários

Premio-computer Apollo/Shadowhawk Manual do Utilizador Página 103