Intel NUC NUC5i5RYK with Intel Core i5 Processor 2.7 GHz (BOXNUC5I5RYK)

Intel did improve a lot in cooling this little guy. For those of you who had purchased NUC before. You know heat is quite an issue with this unit. With the next 5th Generation of i5-CPU, it can run cooler. It take the M.2 SSD that use the PCI-E interface which will be faster than using the SATA SSD. However, the M.2 SSD is generally more expensive than using a SATA SSD. A normal end user may not able to tell the difference until there is big data transfer happening.