The exact number isn't usually relevant so they get removed and the official guidelines request they not be included - in this case the number represents cores x sockets, the article mentions 2 and 4 and 8 socket boards and with a different processor it could vary a lot, but the important part is combining the boards not their particular hardware choices.

> If the title begins with a number or number + gratuitous adjective, we'd appreciate it if you'd crop it. E.g. translate "10 Ways To Do X" to "How To Do X," and "14 Amazing Ys" to "Ys." Exception: when the number is meaningful, e.g. "The 5 Platonic Solids."

https://news.ycombinator.com/newsguidelines.html

I didn't realize that when submitting. It's too late for me to fix it.