Question: what is the difference between i5 3rd and 7th generation?
Answer: Core Counts & Clock Speeds Intel's current lineup of Core i3 processors are almost entirely quad-core. Their Core i5 CPUs for desktop PCs boast 6-cores while mobile Core i5 processors are, again, mostly quad-core. Meanwhile, modern Core i7 processors range from quad-core all the way up to octa-core.