Datasheet
Table Of Contents
- Intel® Desktop Boards D915GEV/D915GRF Technical Product Specification
- Revision History / Disclaimer
- Preface
- Contents
- 1 Product Description
- 1.1 PCI Bus Terminology Change
- 1.2 Overview
- 1.3 Online Support
- 1.4 Processor
- 1.5 System Memory
- 1.6 Intel® 915G Chipset
- 1.7 PCI Express Connectors
- 1.8 I/O Controller
- 1.9 Audio Subsystem
- 1.10 LAN Subsystem
- 1.11 Hardware Management Subsystem
- 1.12 Power Management
- 1.12.1 ACPI
- 1.12.2 Hardware Support
- 1.12.2.1 Power Connector
- 1.12.2.2 Fan Connectors
- 1.12.2.3 LAN Wake Capabilities
- 1.12.2.4 Instantly Available PC Technology
- 1.12.2.5 Resume on Ring
- 1.12.2.6 Wake from USB
- 1.12.2.7 Wake from PS/2 Devices
- 1.12.2.8 PME# Signal Wake-up Support
- 1.12.2.9 WAKE# Signal Wake-up Support
- 1.12.2.10 +5 V Standby Power Indicator LED
- 1.13 Trusted Platform Module
- 1.13.1 System Requirements
- 1.13.2 Warning of Potential Data Loss
- 1.13.3 Security Precautions
- 1.13.4 Trusted Platform Module Ownership
- 1.13.5 Enabling the Trusted Platform Module
- 1.13.6 Assuming Trusted Platform Module Ownership
- 1.13.7 Recovery Procedures
- 1.13.8 Clearing Trusted Platform Module Ownership
- 1.13.9 Software Support
- 2 Technical Reference
- 2.1 Introduction
- 2.2 Memory Resources
- 2.3 DMA Channels
- 2.4 Fixed I/O Map
- 2.5 PCI Configuration Space Map
- 2.6 Interrupts
- 2.7 PCI Conventional Interrupt Routing Map
- 2.8 Connectors
- 2.8.1 Back Panel Connectors
- 2.8.2 Component-side Connectors
- 2.9 Jumper Block
- 2.10 Mechanical Considerations
- 2.11 Electrical Considerations
- 2.12 Thermal Considerations
- 2.13 Reliability
- 2.14 Environmental
- 2.15 Regulatory Compliance
- 3 Overview of BIOS Features
- 4 Error Messages and Beep Codes
Intel Desktop Board D915GEV/D915GRF Technical Product Specification
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2.11 Electrical Considerations
2.11.1 DC Loading
Table 35 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 35. DC Loading Characteristics
DC Current at:
Mode DC Power +3.3 V +5 V +12 V -12 V +5 VSB
Minimum loading 200.00 W 3.30 A 10.00 A 9.00 A 0.03 A 0.80 A
Maximum loading 300.00 W 6.00 A 14.00 A 16.00 A 0.10 A 1.40 A
2.11.2 Add-in Board Considerations
The boards are designed to provide 2 A (average) of +5 V current for each add-in board. The total
+5 V current draw for a fully loaded board (all six expansion slots and the PCI Express x16 slot
filled) must not exceed 14 A.
2.11.3 Fan Connector Current Capability
CAUTION
The processor fan must be connected to the processor fan connector, not to a chassis fan
connector. Connecting the processor fan to a chassis fan connector may result in onboard
component damage that will halt fan operation.
Table 36 lists the current capability of the fan connectors.
Table 36. Fan Connector Current Capability
Fan Connector Maximum Available Current
Processor fan 1000 mA
Front chassis fan
600 mA
Rear chassis fan
600 mA
Rear chassis fan 2
600 mA
ATX fan (optional)
600 mA