I got the i7 Optane version and I found that it would have been better to get the SSD version... the Optane works very good though with an older type hard drive that spins which came in my NUC... it started up fast but not much speed on other things that would use the hard drive... so I disabled the Optane and put in a SSD... that makes a huge difference and it's very fast all the time now... I was confused about the Turbo Boost feature and was told by Intel that it's built into the CPU and does not require the Turbo Boost software like one of my other PC's.. it has to be enabled in Bios though.. you should update the Bios soon as you can after starting it up and there is an update for it at Intel... it has a Thunderbolt port on the rear that can be used for booting external USB drives and again, you have to enable it in the Bios...I included a photo for size comparison and in the photo is this NUC and the fan for my desktop CPU... the NUC is very small but powerful..