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I would like to know the first Xeon to support the LAHF/SAHF and PrefetchW ?
Is there a way to query the Intel processor finder for specific feature support ?
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Hello Irwindale,
At this point I do not have the information handy but let me research and I will be back soon with more information.
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Hi Kevin, thanks let me know if you find it then.
There should be a comparison table, it would be helpful ! ...especially since the new requirements for Windows 8.1.
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Hi Irwindale,
Thanks for waiting. LAHF and SAHF are part of Intel Virtualization Technology (Intel VT-x). For Xeon CPU's, VT-x was introduced with the Clovertown family. You can a list of Clovertown CPU's here:
http://ark.intel.com/products/codename/23349/Clovertown?q=clovertown http://ark.intel.com/products/codename/23349/Clovertown?q=clovertown
These CPU's launched starting in 2006 and any cpu (xeon or Core) that supports VT-x will support LAHF/SAHF; however, it is important to mention that not all Xeon or Core (1st gen, 2nd gen, 3rd gen, 4th gen) support VT-x.
In regards the PrefetchH it is supported in all Xeon CPU's.
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The question was about PREFETCHW, not PREFETCHH. PREFETCHW will be added in the Intel Broadwell family of processors, per https://www-ssl.intel.com/content/www/us/en/embedded/products/broadwell-u/5th-gen-core-mobile-u-processor-platform-brief.html 5th Gen Intel® Core™ Processors (Mobile U-Processor) Platform Brief.
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