Igor's Lab recently put 600 Raptor Lake Refresh CPUs in a head-to-head comparison test to see how silicon quality varied. Chips tested included the 14900K/KF, 14700K/KF, and the 14600K/KF. Igor's Lab also tested these chips against Intel's 13th Gen counterparts, such as the 13900KS, to see how Intel's newer chips behave in terms of silicon quality compared to Intel's older Raptor Lake CPUs.
Igor's Lab utilized an Asus Maximus Z790 Hero to conduct all the tests. One of the features built into Asus' latest Z790 Hero is a silicon prediction metric that can test the silicon quality of any Intel CPU that's put into it. Asus' silicon prediction feature works by checking the maximum VID a CPU requests, which varies depending on the silicon quality of each chip. A higher VID represents an inferior chip, while a lower VID represents a better-binned CPU.
