In the new Haswell chip power consumption will be reduced so that laptops and tablets will be able to work up to 50% longer than Ivy Bridge, which should in no way affect the performance of the devices. In standby mode, the fourth generation of Core processors will be up to 20 times more energy efficient.
Intel has already announced that the performance of built-in notebook computers to the new graphics chips will double, and computers - triple. The production will be cheaper thanks to built-in memory Haswell DRAM. Announcement will happen at Computex 2013 in early June.