Intel® Desktop Board DQ45CB Specification Update July 2010 Order Number: E53961-007US The Intel® Desktop Board DQ45CB may contain design defects or errors known as errata, which may cause the product to deviate from published specifications. Current characterized errata are documented in this Specification Update.
Revision History Revision Revision History Date -001 This document is the first Specification Update for the Intel® Desktop Board DQ45CB September 2008 -002 Updated the Specification Changes Section October 2008 -003 Update to the General Information Section January 2009 -004 Updated the Specification Changes Section April 2009 -005 Updated the Specification Changes Section July 2009 -006 Updated the General Information Section May 2010 -007 Updated the General Information Section Jul
Contents Specification Update for the Intel® Desktop Board DQ45CB ..... 4 Terminology ............................................................................................ 5 General Information ................................................................................. 5 Summary of Changes ............................................................................... 6 Specification Changes ...............................................................................
Specification Update for the Intel® Desktop Board DQ45CB This document is an update to the specifications contained in the Intel ® Desktop Board DQ45CB Technical Product Specification (Order Number E42785). It is intended for hardware system manufacturers and software developers of applications, operating systems, or tools. It will contain Specification Changes, Errata, Specification Clarifications, and Documentation Changes.
Terminology Specification Changes are modifications to the current published specifications. These changes will be incorporated in the next release of the specifications. Errata are design defects or errors. Characterized errata may cause the desktop board behavior to deviate from published specifications.
Summary of Changes The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation Changes that apply to the Intel® Desktop Board DQ45CB. Intel intends to fix some of the errata in a future revision of the desktop board, and to account for the other outstanding issues through documentation or specification changes as noted. The following notations are used in the table: Doc: Document change or update that will be implemented.
Specification Changes The Specification Changes listed in this section apply to the Intel® Desktop Board DQ45CB Technical Product Specification (Order Number E42785). 1. Information was added to Section 2.6 Thermal Considerations of the Technical Product Specification. This includes a new Caution statement, changes to the Thermal Considerations for Components table, as well as lead-in text and a new table, Tcontrol Values for Components. 2.
It is important to note that the temperature measurement in the system BIOS is a value reported by embedded thermal sensors in the components and does not directly correspond to the Maximum Case Temperature. Intel® Quiet System Technology (Intel® QST) monitors the embedded thermal sensor for system fan speed control. The upper operating limit when monitoring this thermal sensor is Tcontrol. Table 30.
4. Support for up to 8 GB system memory has been changed to support for up to 16 GB system memory. Partial section of table 1 shown below. Table 1. Feature Summary Form Factor Micro-ATX (9.60 inches by 9.60 inches [243.84 millimeters by 243.
Table 3. Supported Memory Configurations Largest usable DIMM (one x8 Double-sided DIMM) Maximum capacity with four identical x8 Double-sided DIMMs 4 GB DIMM Type SDRAM Technology Smallest usable DIMM (one x16 Single-sided DIMM) DDR2 667 512 Mbit 256 MB 1 GB DDR2 667 1 Gbit 512 MB 2 GB 8 GB DDR2 667 2 Gbit 1 GB 4 GB 16 GB DDR2 800 512 Mbit 256 MB 1 GB 4 GB DDR2 800 1 Gbit 512 MB 2 GB 8 GB DDR2 800 2 Gbit 1 GB 4 GB 16 GB 2.1.
The amount of installed memory that can be used will vary based on add-in cards, BIOS settings, and operating system installed. Figure 8 shows a schematic of the system memory map. All installed system memory can be used when there is no overlap of system addresses. Figure 8.
Table 10 lists the system memory map. Table 10. System Memory Map 12 Address Range (decimal) Address Range (hex) Size Description 1024 K - 16777216 K 16382 MB Extended memory 100000 - 3FFFFFFFF 960 K - 1024 K F0000 - FFFFF 64 KB Runtime BIOS 896 K - 960 K E0000 - EFFFF 64 KB Reserved 800 K - 896 K C8000 - DFFFF 96 KB Potential available high DOS memory (open to the PCI Conventional bus). Dependent on video adapter used.
