11 Facts About HyperTransport


HyperTransport, formerly known as Lightning Data Transport, is a technology for interconnection of computer processors.

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The HyperTransport Consortium is in charge of promoting and developing HyperTransport technology.

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HyperTransport is best known as the system bus architecture of AMD central processing units from Athlon 64 through AMD FX and the associated motherboard chipsets.

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HyperTransport has been used by IBM and Apple for the Power Mac G5 machines, as well as a number of modern MIPS systems.

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Electrically, HyperTransport is similar to low-voltage differential signaling operating at 1.

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HyperTransport is packet-based, where each packet consists of a set of 32-bit words, regardless of the physical width of the link.

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HyperTransport packets enter the interconnect in segments known as bit times.

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Primary use for HyperTransport is to replace the Intel-defined front-side bus, which is different for every type of Intel processor.

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In contrast, HyperTransport is an open specification, published by a multi-company consortium.

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AMD used HyperTransport to replace the front-side bus in their Opteron, Athlon 64, Athlon II, Sempron 64, Turion 64, Phenom, Phenom II and FX families of microprocessors.

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Infinity Fabric is a superset of HyperTransport announced by AMD in 2016 as an interconnect for its GPUs and CPUs.

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