Supported Processors for the Intel® Desktop Board D955XBK
The Intel® Desktop Board D955XBK supports one Intel® Processor in an LGA775 socket. See the table below for a complete list of supported processors.
Processors not specifically listed by type and rated speed might have requirements unsupported by the design of the desktop board. Use of unsupported processors can result in improper operation, damage to the desktop board or processor, or reduced product life.
The sSpec number is also known as specification number. This five-character string (for example: SL36W or XL2XL) is printed on the processor and used to identify the processor. You can find this number on the processor or on the label that came with your boxed processor.
Choose your processor family:
- Intel® Pentium® D Processor
- Intel® Pentium® Extreme Edition Processor
- Intel® Pentium® 4 Extreme Edition Processor
- Intel® Pentium® 4 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 |
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 |
Caution![]() | 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. |