Does equipping the whole set gives any additional bonus?

Question

I recently thought of buying a Cain's Fate set to level up faster. In the game and on Battle.Net website it says:

• (2) Set:
  • Attack Speed Increased by 2%
• (3) Set:
  • 10% Better Chance of Finding Magical Items
  • Increases Bonus Experience by 30%

Does equipping the whole set(4 items) give any more bonuses?

Answer 1

Unless the bonus is identified on the items, no. In your example, putting on four pieces of Cain's Fate would not give you an additional bonus over putting on three pieces.

If, for example, you picked up a set that had bonuses for 4 or 5 pieces, then these sets would give additional bonuses as detailed on the items for equipping more pieces of the set.