im loooking at these e5-2680 v4 engineering samples on ebay for about $150. does anyone have experience with engineering samples? any issues I'll run into?

https://www.ebay.com/sch/i.html?_fro...dkw=+E5-2680v4

2nd question: would there be an advantage in running them as singles on two boards rather than a dual socket board? if thats possible.