编辑“︁X86-64”︁（章节）

== VIA x86-64  ==
[[VIA]]在[[Centaur]]研发部门五年的研发后，发布了其第一款x86-64改进架构<ref>{{cite web |title= VIA to launch new processor architecture in 1Q08 |publisher= [[DigiTimes]] |url= http://www.digitimes.com/news/a20070725PD206.html |accessdate= 2007-07-25 |format= subscription required |archive-date= 2008-12-03 |archive-url= https://web.archive.org/web/20081203201340/http://www.digitimes.com/news/a20070725PD206.html }}</ref>，微架构研发代号"Isaiah", 而64位微架构于2008年1月24日首次展示<ref>{{cite web|title       = Isaiah revealed: VIA's new low-power architecture|publisher       = Ars Technica|url       = https://arstechnica.com/articles/paedia/cpu/via-cpu-isaiah.ars|accessdate       = 2008-01-24|first       = Jon|last       = Stokes|date       = 2008-01-23|archive-date       = 2008-01-27|archive-url       = https://web.archive.org/web/20080127095807/http://arstechnica.com/articles/paedia/cpu/via-cpu-isaiah.ars}}</ref>，并在5月29日以[[VIA Nano]]品牌发布产品。<ref>{{cite press release
 |title        = VIA Launches VIA Nano Processor Family
 |publisher    = [[VIA Technologies|VIA]]
 |url          = http://www.viatech.com/en/2008/05/via-launches-via-nano-processor-family/
 |accessdate   = May 25, 2017
 |date         = May 29, 2008
 |archive-date = 2019-02-03
 |archive-url  = https://web.archive.org/web/20190203072901/https://www.viatech.com/en/2008/05/via-launches-via-nano-processor-family/
}}</ref>

该处理器支持一类VIA专为提高低功率应用情景下的效率而研发的x86扩展指令集。
Isaiah微架构预计与前一代架构[[Esther]]相比，同[[时钟频率]]下，在整数运算表现上会有两倍提性能提升升， [[浮点]]运算上会有四倍性能提升。而在功耗上，处理器 [[TDP]]设置为5&nbsp;W到 25&nbsp;W。<ref>{{cite web
 |publisher   = [[VIA Technologies|VIA]]
 |url         = http://www.via.com.tw/en/downloads/presentations/processors/pb_via-isaiah_080124.pdf
 |title       = VIA Isaiah Architecture Introduction
 |format      = PDF
 |accessdate  = 2013-07-31
 |date        = 2008-01-23
 |dead-url    = yes
 |archiveurl  = https://web.archive.org/web/20080907181213/http://www.via.com.tw/en/downloads/presentations/processors/pb_via-isaiah_080124.pdf
 |archivedate = 2008-09-07
 }}</ref>
此外，对于前代产品 [[VIA C7]]系列尚不支持的[[x86虚拟化]]技术,该架构也作了支持，同时也保留了加密扩展。