Premio Computer Apollo/Shadowhawk - Manual (Page 103)

Intel Desktop Board D845HV/D845WN Technical Product Specification
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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.