Core i3 is a slower clock speed i5 without Turbo Boost. I3 Core i3 processors first appeared in 2010 and are the entry-level Intel chipsets with 2 cores (processors). TIP: Hard to fix Windows Problems? Repair/Restore Missing Windows OS Files Damaged by Malware with a few clicksīriefly, let's understand the three majorly available chipsets i3, i5, and i7, or follow along with our brief video: