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Intel® 955X Express Chipset
overview technical documents product support tools & software
Platforms based on the Intel® 955X Express Chipset and Intel® Pentium® processor Extreme Edition deliver incredible digital entertainment experiences and meet the most demanding business applications of today and tomorrow.

The Intel 955X Express Chipset enables Intel's highest performance platforms, with support for the new Intel dual-core processor supporting Hyper-Threading Technology, adding intelligence to help manage and prioritize four software threads simultaneously for the first time on desktop PCs. Additionally, this chipset supports key performance-optimized capabilities such as Intel® Memory Pipeline Technology (Intel® MPT), up to 8 GB memory addressability to help enable 64-bit computing, and ECC memory support.
Intel® 955X Express Chipset
Download Desktop Product Brief [PDF 106KB]
Download Workstation Product Brief [PDF 1.24MB]
View Chipset Diagram
Motherboard and Barebones Selector Guide
Performance Desktop Chipset Comparison Chart
Intel® 955X Express Chipset Features
Features Benefits
Supports Intel® Core™2 Processor with Viiv™ Technology∇ Get ready for a new kind of consumer entertainment PC that will change the way you enjoy entertainment at home. With a system based on the Intel 955X Express Chipset*, control the music, movies, games, and photos you want to enjoy both from your personal entertainment collections and endless entertainment options from a wide range of Intel® Core™2 processor with Viiv™ technology verified service providers delivered right to your living room.
800 MHz or 1066 MHz FSB Supports Intel Pentium processor Extreme Edition and all other Intel® Pentium processors in the LGA775 socket with scalability for future processor innovations.
Supports dual-core processors with Hyper-Threading Technology Ability to manage four software threads simultaneously, enabling increased system responsiveness and performance for multi-tasking.
Support for LGA775 processor package Supports the high-performance Intel desktop processors on the LGA775 processor package.
PCI Express* x16 Interface Delivers greater than 3.5 times the bandwidth over the traditional AGP 8X interface. Supports the latest graphics cards for demanding games and applications.
PCI Express* x1 Interface Offers up to 3.5 times the bandwidth over traditional PCI architecture. Enables smoother video playback, and professional grade, high-definition content editing capability through the PC.
Intel® Matrix Storage Technology¹ Provides quicker access to digital photo, video and business files with RAID 0, 5 and 10, and data protection against loss from a hard disk drive failure with RAID 1, 5 and 10.
Intel® High Definition (HD) Audio Enables premium digital sound in the PC for an immersive surround-sound experience, high quality speech recognition and voice over IP. Intel HD Audio systems provide access to Dolby* PC sound technology.
Intel® Memory Pipeline Technology Enhanced memory pipelining that enables a higher utilization of each memory channel, accelerating data transfers between the processor and system memory and resulting in higher system performance.
Dual-channel DDR2 Memory Support Delivers increased bandwidth for faster system response performance with up to 10.7GB/s of bandwidth and 8GB addressability for faster system response.
Intel® Flex Memory Technology Facilitates easier upgrades by allowing different memory sizes to be populated and remain in dual-channel mode.
Platform Software Comprehensive platform driver stack delivers performance and helps lower TCO.
Intel® Active Management Technology Enables remote, down-the-wire management of out-of-band networked systems regardless of system state. Helps to improve IT efficiency, asset management and system security and availability.
Serial ATA* (SATA) 3 Gb/s High-speed storage interface supports faster transfer rate for improved data access.
Related Products
Processors
Intel® Pentium® processor Extreme Edition
Intel® Pentium® 4 processor Extreme Edition supporting Hyper-Threading Technology
Intel® Pentium® 4 processor supporting Hyper-Threading Technology
Intel® Pentium® D processor
Motherboard
Intel® Desktop Board D955XBK
Packaging Information
Product Package
Intel® Pentium® processor Extreme Edition 775 Land Grid Array (LGA)
Intel® Pentium® 4 processor Extreme Edition supporting Hyper-Threading Technology 775 Land Grid Array (LGA)
Intel® 82955X Memory Controller Hub 1202 Flip Chip Ball Grid Array (FCBGA)
Inte® 82801GB I/O Controller Hub
Intel® 82801GR I/O Controller Hub
652 Micro Ball Grid Array (mBGA)
Home networking capability and Intel® Viiv™ technology-based usage models will require additional hardware devices, software or services. Functionality of Intel® Viiv™ technology verified devices will vary; check product details for desired features. System and component performance and functionality will vary depending on your specific hardware and software configurations. See www.intel.com/products/viiv/ for more information.

Hyper-Threading Technology (HT Technology) requires a computer system with an Intel® Processor supporting HT Technology and an HT Technology enabled chipset, BIOS, and operating system. Performance will vary depending on the specific hardware and software you use. See www.intel.com/products/ht/hyperthreading_more.htm for more information including details on which processors support HT Technology.

¹ Intel® Matrix Storage Technology requires a motherboard with the Intel® 82801FR (ICH6R) or Intel 82801GR (ICH7R) I/O Controller Hub System. The system must also have the RAID controller in the BIOS.
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