Intel D845GLLY D845GLLY_ProductSupplement - Page 26

Product Supplement Document for the Intel Desktop Board D845GLLY 2.6 Electrical Considerations 2.6.1 Power Consumption Table 19 lists voltage and current measurements for a computer that contains the Desktop Board D845GLLY and the following: • 2.0 GHz Intel Pentium 4 processor with a 512 KB cache • 384 MB SDR SDRAM • 3.5-inch diskette drive • 40 GB IDE hard disk drive • 40X 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† 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 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. Table 19. Power Usage Mode ACPI S0 ACPI S1 ACPI S3 AC Power 59.9 W 52.1 W 4.0 W +3.3 V 2.55 A 2.45 A 0.0 A +5 V 0.121 A 0.118 A 0.0 A DC Current at: +12 V -12 V 0.96 A 0.020 A 0.92 A 0.020 A 0.0 A 0.0 A +5 VSB 0.26 A 0.21 A 0.43 A 2.6.2 Add-in Board Considerations The Desktop Board D845GLLY is designed to provide 2 A (average) of +5 V current for each addin board. For a fully loaded Desktop Board D845GLLY (all four expansion slots filled), the total +5 V current draw must not exceed 8 A. 26