Intel D845GEBV2 BLKD845GERG2-10PK User Manual

Product codes
BLKD845GERG2-10PK
Page of 128
Intel Desktop Board D845GEBV2/D845GERG2 Technical Product Specification 
78 
 
2.11 Electrical Considerations 
2.11.1 Power 
Consumption 
Table 42 lists voltage and current measurements for a computer that contains the Desktop Board 
D845GEBV2/D845GERG2 and the following: 
•  2.80 GHz Intel Pentium 4 processor with a 512 KB cache  
•  64 MB AGP add-in card 
•  256 MB DDR 333 SDRAM 
•  3.5-inch diskette drive 
•  10 GB IDE hard disk drive 
•  6.2 X IDE CD-ROM/32 X CD-ROM drive 
This information is provided only as a guide for calculating approximate power usage with 
additional resources added.   
Values for the Windows XP 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 300 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 20 for specification information). 
Table 42.  Power Usage 
 
 
DC Current at: 
Mode 
AC Power 
+3.3 V 
+5 V 
+12 V 
-12 V 
+5 VSB 
ACPI S0 
163.0 W 
5.68 A 
1.52 A 
7.24 A 
67 mA 
396 mA 
ACPI S1 
93.0 W 
4.04 A 
0.51 A 
2.75 A 
38 mA 
152 mA 
ACPI S3 
3.6 W 
0 A 
0 mA 
0 A 
0 mA 
370 mA 
ACPI S5 
3.1 W 
0 A 
0 mA 
0 A 
0 mA 
290 mA 
2.11.2  Add-in Board Considerations 
The Desktop Boards D845GEBV2 and D845GERG2 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 Desktop Board D845GEBV2 (all seven expansion slots filled), the total 
+5 V current draw must not exceed 14 A.  
•  For a fully loaded Desktop Board D845GERG2 (all four expansion slots filled), the total +5 V 
current draw must not exceed 8 A.