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Intel'sCommunication Streaming Architecture (CSA) was a mechanism used in theIntel Hub Architecture to increase the bandwidth available between a network card and the CPU. It directly connected the network controller to theMemory Controller Hub (northbridge),[1] instead of to theI/O Controller Hub (southbridge) through thePCI bus, which was the common practice until that point.
The technology was only used in Intel chipsets released in 2003. It was largely seen as a stop-gap measure to allowGigabit Ethernet chips to run at full-speed until the arrival of a faster expansion bus.[2] It was also used to connect theWireless networking chips in Intel'sCentrino mobile platform. CSA-connected Ethernet chips showed consistently higher transfer rates than comparable PCI cards.
Shortly after the CSA was introduced,PCI Express was introduced and replaced the CSA stopgap.[3] The technology was subsequently discontinued.
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