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The Intel® Desktop Board D955XBK supports a single Intel® processor in an LGA775 socket. See the table below for a complete list of supported processors.
Warning: Processors not specifically listed by type and rated speed may have requirements that are not supported by the desktop board's design. Use of unsupported processors may result in improper operation, damage to the desktop board or processor, or reduced product life.
The sSpec number is also known as specification number. It is a five character string (SL36W, XL2XL, etc.) that is printed on the processor, and used to identify the processor. You can find this number by looking at the markings on the processor or on the label that came with your boxed processor.
Updated: September 13, 2006
Choose processor family
Intel Pentium D Processor
| Processor Number |
Processor Speed |
System Bus Frequency |
L2 Cache Size |
BIOS Version |
| 960 (sSpec SL9AP & SL9K7 only) |
3.60 GHz |
800 MHz |
2x2 MB |
2043 or greater |
950
(sSpec SL94P & SL9K8 only) |
3.40 GHz |
800 MHz |
2x2 MB |
2043 or greater |
| 945 (sSpec SL9QQ only) |
3.40 GHz |
800 MHz |
4 MB |
2043 or greater |
| 940 |
3.20 GHz |
800 MHz |
2x2 MB |
2015 or greater |
| 930 |
3 GHz |
800 MHz |
2x2 MB |
2015 or greater |
| 925 (sSpec SL9KA only) |
3 GHz |
800 MHz |
2x2 MB |
2043 or greater |
| 920 |
2.80 GHz |
800 MHz |
2x2 MB |
2015 or greater |
| 915 |
2.80 GHz |
800 MHz |
4 MB |
2036 or greater |
| 840 |
3.20 GHz |
800 MHz |
2x1 MB |
2015 or greater |
| 830 |
3 GHz |
800 MHz |
2x1 MB |
2015 or greater |
| 820 |
2.80 GHz |
800 MHz |
2x1 MB |
2015 or greater | |
Intel Pentium Extreme Edition Processor
| Processor Number |
Processor Speed |
System Bus Frequency |
L2 Cache Size |
BIOS Version |
| 965* |
3.73 GHz |
1066 MHz |
2x2 MB |
2036 or greater |
| 955* |
3.46 GHz |
1066 MHz |
2x2 MB |
2015 or greater |
| 840* |
3.20 GHz |
800 MHz |
2x1 MB |
1784 or greater | | *ONLY the following board revisions (AA numbers) support these processors:
C96732-xxx
See the board revision note, below, for an explanation.
Intel Pentium 4 Extreme Edition Processor
| Processor Speed |
System Bus Frequency |
L2 Cache Size |
BIOS Version |
| 3.73 GHz |
800 MHz |
1 MB |
1784 or greater | |
Intel Pentium 4 Processor
| Processor Number |
Processor Speed |
System Bus Frequency |
L2 Cache Size |
BIOS Version |
| 670 |
3.80 GHz |
800 MHz |
2 MB |
2015 or greater |
| 661 |
3.60 GHz |
800 MHz |
2 MB |
2015 or greater |
| 660 |
3.60 GHz |
800 MHz |
2 MB |
2015 or greater |
| 651 |
3.40 GHz |
800 MHz |
2 MB |
2015 or greater |
| 650 |
3.40 GHz |
800 MHz |
2 MB |
2015 or greater |
| 641 |
3.20 GHz |
800 MHz |
2 MB |
2015 or greater |
| 640 |
3.20 GHz |
800 MHz |
2 MB |
2015 or greater |
| 631 |
3 GHz |
800 MHz |
2 MB |
2015 or greater |
| 630 |
3 GHz |
800 MHz |
2 MB |
2015 or greater |
| 620 |
2.80 GHz |
800 MHz |
2 MB |
1784 or greater |
| 571 |
3.80 GHz |
800 MHz |
1 MB |
1784 or greater |
| 570J |
3.80 GHz |
800 MHz |
1 MB |
1784 or greater |
| 561 |
3.60 GHz |
800 MHz |
1 MB |
1784 or greater |
| 560J |
3.60 GHz |
800 MHz |
1 MB |
1784 or greater |
| 560 |
3.60 GHz |
800 MHz |
1 MB |
1784 or greater |
| 551 |
3.40 GHz |
800 MHz |
1 MB |
2015 or greater |
| 550J |
3.40 GHz |
800 MHz |
1 MB |
1784 or greater |
| 550 |
3.40 GHz |
800 MHz |
1 MB |
1784 or greater |
| 541 |
3.20 GHz |
800 MHz |
1 MB |
2015 or greater |
| 540J |
3.20 GHz |
800 MHz |
1 MB |
1784 or greater |
| 540 |
3.20 GHz |
800 MHz |
1 MB |
1784 or greater |
| 531 |
3.00 GHz |
800 MHz |
1 MB |
2015 or greater |
| 530J |
3 GHz |
800 MHz |
1 MB |
1784 or greater |
| 530 |
3 GHz |
800 MHz |
1 MB |
1784 or greater |
| 521 |
2.80 GHz |
800 MHz |
1 MB |
2015 or greater |
| 520 |
2.80 GHz |
800 MHz |
1 MB |
1784 or greater | |
Use of unsupported processors may result in improper operation, damage to the desktop board or processor, or reduced product life. Except as provided in Intel's Terms and conditions of Sale for such products, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF THE INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
Board Revision Note : A small bar-coded label, similar to the diagram shown below, can be found on the component side of the desktop board. The numbers following the letters "AA" can help identify the type and version of your desktop board. The AA contains a 6 digit main number, and a 3 digit dash number (the 3 numbers following the "-").
The statement "...or later" refers to the dash number of the AA (the three numbers following the "-"). If this number is greater than the number listed in the table, the board supports the associated processor(s).
If your 6 digit main number is not listed in the table, contact your system manufacturer for processor support information.
This applies to:
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