ZOTAC's new ZBOXes are actually the first fanless NUC. Previously, you had to buy a third-party chassis to silence a Next Unit of Computing. Featuring Intel's 15W Skylake-U Series processors, the barebones offer what we consider to be desktop-grade experience.
✓
ZBOX CI523 (i3-6100U)
✓
ZBOX CI543 (i3-6200U)
✓
ZBOX CI545 (i5-6300U)
Update:
We don't recommend them.