I'm helping my roommate build his first PC. Went on to PC Part Picker, made sure all of the parts matched and everything, and I just told him to buy all of those. Well, he decided he wanted a Ryzen 5 instead of a Ryzen 7 so he went and bought a 5000 series Ryzen 7 instead of a 7000 series Ryzen 7. He thought that the series number was the class number, and vice versa. So, he's gotta' return it and swap 'em out now.

Honestly, that's a very easy mistake to make. They make this shit so fucking confusing for newcomers.