Lisa Gade covers the new Intel 8th generation CPUs that are soon shipping for Ultrabooks. These are called Kaby Lake-R and double the number of CPU cores from previous Core i5 and i7 15 watt CPUs (UHD 620 graphics are basically unchanged from 7th gen). Intel claims they’re 40% faster— is that true? Is it time to upgrade your laptop? Lisa benchmarks them to find out.