Just a couple of changes from techphantom's build as I think going for a Z390 motherboard would be a better bet than the Z370 especially if you ever upgrade to the 9700K or 9900K in the future as the Z390 boards have a better VRM setup, especially the ASRock boards. I also changed the cooler to a Cryorig H7 as it is just a bit better and will allow for just a little more headroom..
As techpantom has said the 8700K is a great CPU and on par with the 9700K and 9900K with just a very, very small difference that you will probably never notice. It's also a great overclocker and will provide a great gaming PC for many years to come.
More importantly, on the 1080 GTX, look for some second hand/used deals as they are going on Ebay for very good prices and much less than the retail price...you will save money!!
PCPartPicker part list:
https://it.pcpartpicker.com/list/rfBpWD
Price breakdown by merchant: https://it.pcpartpicker.com/list/rfBpWD/by_merchant/
CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor (€449.99 @ Amazon Italia)
CPU Cooler: CRYORIG - H7 49.0 CFM CPU Cooler (€38.40 @ Amazon Italia)
Motherboard: ASRock - Z390 Pro4 ATX LGA1151 Motherboard (€133.73 @ Amazon Italia)
Memory: Team - Vulcan 16GB (2 x 8GB) DDR4-3000 Memory (€140.99 @ Amazon Italia)
Storage: Samsung - 860 Evo 500GB 2.5" Solid State Drive (€83.35 @ Amazon Italia)
Storage: Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive (€41.99 @ Amazon Italia)
Video Card: Inno3D - GeForce GTX 1080 8GB Twin X2 Video Card (€549.86 @ Amazon Italia)
Case: SHARKOON - TG5 ATX Mid Tower Case (€69.11 @ Amazon Italia)
Power Supply: Corsair - Vengeance 650W 80+ Bronze Certified Semi-Modular ATX Power Supply (€84.69 @ Amazon Italia)
Total: €1592.11
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-10-31 20:54 CET+0100