View source for Intel Hub Architecture

{{more citations|date=September 2022}}
'''Intel Hub Architecture''' ('''IHA'''), also known as '''Accelerated Hub Architecture''' ('''AHA''') was [[Intel]]'s architecture for the 8xx family of [[chipset]]s,<ref>{{Cite book |last=Talukdar |first=Mrinal |url=https://books.google.com/books?id=NsswBQAAQBAJ&pg=PA10 |title=Dictionary of Computer & Information Technology |date=2021-01-19 |publisher=[[Prabhat Prakashan]] |isbn=978-93-5048-505-7 |language=en |page=10}}</ref><ref>{{Cite book |last=Das |first=Lyla B |url=https://books.google.com/books?id=zWrZY1OgTPsC&pg=PA566 |title=The X86 Microprocessors: Architecture And Programming (8086 To Pentium) |date=2010 |publisher=[[Pearson Education India]] |isbn=978-81-317-3246-5 |language=en |page=566}}</ref> starting in 1999 with the [[Intel 810]]. It uses a [[memory controller]] hub (MCH) that is connected to an [[I/O controller hub]] (ICH) via a 266 MB/s bus. The MCH chip supports memory and [[Accelerated Graphics Port|AGP]] (replaced by [[PCI Express]] in 9xx series chipsets), while the ICH chip provides connectivity for [[Peripheral Component Interconnect|PCI]] (revision 2.2 before ICH5 series and revision 2.3 since ICH5 series), [[Universal Serial Bus|USB]] (version 1.1 before ICH4 series and version 2.0 since ICH4 series), sound (originally [[AC'97]], [[Intel High Definition Audio|Azalia]] added in ICH6 series), [[Integrated Drive Electronics|IDE]] hard disks (supplemented by [[Serial ATA]] since ICH5 series, fully replaced IDE since ICH8 series for desktops and ICH9 series for notebooks) and [[local area network|LAN]] (uncommonly activated on desktop motherboards and notebooks, usually independent LAN controller were placed instead of [[PHY]] chip).{{cn|date=September 2022}}

Intel claimed that, because of the high-speed channel between the sections, the IHA was faster than the earlier [[northbridge (computing)|northbridge]]/[[southbridge (computing)|southbridge]] design,<ref>{{cite book |first1=Tony |last1=Sammes |first2=Brian |last2=Jenkinson |chapter=PC Hardware and Inside the Box |date=2007 |chapter-url=http://link.springer.com/10.1007/978-1-84628-732-9_4 |title=Forensic Computing |pages=75–101 |publisher=[[Springer Science+Business Media]] |language=en |doi=10.1007/978-1-84628-732-9_4 |isbn=978-1-84628-397-0 |access-date=2022-09-23}}</ref> which hooked all low-speed ports to the PCI bus. The IHA also optimized data transfer based on data type.{{cn|date=September 2022}}

==Next generation==
Intel Hub Interface 2.0 was employed in Intel's line of E7xxx server chipsets. This new revision allowed for dedicated data paths for transferring greater than 1.0 GB/s of data to and from the MCH, which support I/O segments with greater reliability and faster access to high-speed networks.

==Current status==
IHA is now considered obsolete and no longer used, being superseded by the [[Direct Media Interface]] architecture. The [[Platform Controller Hub]] (PCH) providing most of the features previously seen in ICH chips while moving memory, graphics and PCI Express controllers to the CPU, introduced with the [[Intel 5 Series]] chipsets in 2009. This chipset architecture is still used in desktops, in some notebooks it is going to be replaced by [[System on a chip|SoC]] processor designs. 

== References ==
{{reflist}}

==External links==
*[https://web.archive.org/web/19991010042140/http://intel.com/design/chipsets/810/ First Intel chipset to use IHA]

{{Intel technology}}

[[Category:Intel products|Hub Architecture]]
[[Category:Computer buses]]