Though ultrabook was at first introduced in the market in 2011 , the major promotion kicked off toward the end of 2q12 with the ivybridge , based ultrabook release .
虽然超极本在2011年首次推向市场，但是直到搭载了IvyBridge芯片的超极本发布，大规模的市场推广才在2012年的第2季度开始。
ivybridge