Editing HyperTransport (section)

== Frequency specifications ==
{| class="wikitable" style="text-align:center; vetical-align:center;"
|-
! rowspan=2 | HyperTransport<br />version
! rowspan=2 | Year
! rowspan=2 | Max. HT frequency
! rowspan=2 | Max. link width
! colspan=3 | Max. aggregate bandwidth (GB/s)
|-
! bi-directional
! 16-bit unidirectional
! 32-bit unidirectional*
|-
! 1.0
| 2001
| 800&nbsp;MHz
| 32-bit
| 12.8
| 3.2
| 6.4
|-
! 1.1
| 2002
| 800&nbsp;MHz
| 32-bit
| 12.8
| 3.2
| 6.4
|-
! 2.0
| 2004
| 1.4&nbsp;GHz
| 32-bit
| 22.4
| 5.6
| 11.2
|-
! 3.0
| 2006
| 2.6&nbsp;GHz
| 32-bit
| 41.6
| 10.4
| 20.8
|-
! 3.1
| 2008
| 3.2&nbsp;GHz
| 32-bit
| 51.2
| 12.8
| 25.6
|}
<nowiki>*</nowiki> AMD [[Athlon 64]], Athlon 64 FX, [[Athlon 64 X2]], Athlon X2, [[Athlon II]], Phenom, [[Phenom II]], [[Sempron]], [[AMD Turion|Turion]] series and later use one 16-bit HyperTransport link.  AMD Athlon 64 FX ([[Socket F|1207]]), [[Opteron]] use up to three 16-bit HyperTransport links.  Common clock rates for these processor links are 800&nbsp;MHz to 1&nbsp;GHz (older single and multi socket systems on 754/939/940 links) and 1.6&nbsp;GHz to 2.0&nbsp;GHz (newer single socket systems on AM2+/AM3 links—most newer CPUs using 2.0{{nbsp}}GHz). While HyperTransport itself is capable of 32-bit width links, that width is not currently utilized by any AMD processors.  Some chipsets though do not even utilize the 16-bit width used by the processors.  Those include the Nvidia [[nForce3]] 150, nForce3 Pro 150, and the [[ULi]] M1689—which use a 16-bit HyperTransport downstream link but limit the HyperTransport upstream link to 8&nbsp;bits.