http://ark.intel.com/ja/products/123767/Intel-Core-i7-7820X-Processor-11M-Cache-up-to-4_30-GHz
i7-7800X DDR4-2400
http://ark.intel.com/products/123589/Intel-Core-i7-7800X-X-series-Processor-8_25M-Cache-up-to-4_30-GHz
i7-7740X DDR4-2666
https://www.intel.co.jp/content/www/jp/ja/products/processors/core/x-series/i7-7740x.html
i5-7640X DDR4-2666
http://ark.intel.com/products/121500/Intel-Core-i5-7640X-X-series-Processor-6M-Cache-up-to-4_20-GHz
なんで上位の7800Xだけ、DDR4-2400なんだろう・・
