At Computex this past week, five was the magic number. Usually, it was describing the number of gigahertz certain Intel processors were clocked at during the company's keynote. One of those demos has touched off a firestorm about just how valid it is to demonstrate a 28-core CPU with an extreme overclock and extreme cooling, but the other 5-GHz chip Intel showed is a product you can actually buy today. In exchange for $425 at Amazon, Newegg, and Best Buy, the Core i7-8086K is meant to celebrate 40 years of the x86 instruction set architecture. It's also making a little history of its own as Intel's first processor to reach 5 GHz Turbo Boost speeds.