http://www.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html
http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-manual-325462.pdf
http://cache-www.intel.com/cd/00/00/01/77/17705_htt_user_guide.pdf
http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developers-manual.pdf
https://software.intel.com/en-us/articles/performance-insights-to-intel-hyper-threading-technology