page_title: I/O Controller Hub
section_title: ICH8
hierarchical_section_title: I/O Controller Hub / ICH8
caption_attribution_description: English: Intel NH82801HBM SLB9A Southbridge Deutsch: Intel NH82801HBM SLB9A Southbridge
context_page_description: I/O Controller Hub is a family of Intel southbridge microchips used to manage data communications between a CPU and a motherboard, specifically Intel chipsets based on the Intel Hub Architecture. It is designed to be paired with a second support chip known as a northbridge. As with any other southbridge, the ICH is used to connect and control peripheral devices.
  As CPU speeds increased data transmission between the CPU and support chipset, the support chipset eventually emerged as a bottleneck between the processor and the motherboard. Accordingly, starting with the Intel 5 Series, a new architecture was used that incorporated some functions of the traditional north and south bridge chips onto the CPU itself, with the remaining functions being consolidated into a single Platform Controller Hub. This replaces the traditional two chip setup.
context_section_description: ICH8 is offered in several different versions and is the complement to the 965 class MCH chips. The non-mobile ICH8 does not have a traditional PATA interface, and just one AC'97. In practice, most baseboard manufacturers still offered PATA appropriate connection types using additional chips from manufacturers such as JMicron or Marvell.
  The ICH8 was the first ICH model to control  eSATA and Gigabit Ethernet, which were previously accommodated in the MCH. The base version only includes four SATA 2.0 ports.
  The ICH8R (RAID) and above chips support six SATA devices. Additionally the ICH8DH (Digital Home) has Quick Resume and can be used together with the P965 and/or G965 in Intel Viiv-certified systems.
  The counterpart to the ICH8DO (Digital Office) is the Q965 MCH, which together provide Intel vPro compatibility.
  This has the following variants:
  82801HB (ICH8) Base
  82801HR (ICH8R) RAID
  82801HH (ICH8DH) Digital Home
  82801HO (ICH8DO) Digital Office
  82801HM (ICH8M) Mobile
  82801HBM (ICH8BM) Base Mobile
  82801HEM (ICH8EM) Enhanced Mobile
caption: 82801HBM
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