But right, OP was asking only for a 15W cpu and the gpu level of a 650 Ti, which is weaker than this.
https://www.zotac.com/us/product/mini_pcs/magnus-en1070k-win...
It's smaller than Mac Mini, yet you can do serious gaming, Deep Learning and cryptomining with it; that's not possible with Hades Canyon. It's quiet as well. Power consumption should be quite a bit lower than 1080 version as well.
But Thunderbolt is going to become an open standard. So hopefully that means lot of people will be design or selling IP for SoC. And I hope it would be in time for AMD to include it in their Zen 2 products.
"On 24 May 2017, Intel announced that Thunderbolt 3 would become a royalty-free standard to OEMs and chip manufacturers in 2018, as part of an effort to boost the adoption of the protocol."
If you gonna get one of those, go for 35W TDP CPU as I had some issues with overheating on Ryzen 2400G using this case -- https://www.newegg.ca/Product/Product.aspx?Item=9SIA93K72F62...
This is a complete part list of my build -- https://ca.pcpartpicker.com/user/avolkov/saved/#view=mYmM8d
When do you see the lag? While playing games?? development work??? I am looking forward to buy an NUC, I do lots of photo editing and development.