Here are the parts that I think they are good
This the first build.It cost around 1250 euro
1.CPU:I5 8400
2.Motherboard: MSI Z370 Gaming Plus
3.Case Aerocool Aero-500 (Window)
4.Cooling:CoolerMaster MasterLiquid 240
5.RAM: Crucial Ballistix Sport LT White 16GB DDR4-2666MHz
6.HDD:Western Digital Blue 1TB
7.GPU: Gigabyte GeForce GTX1080 8GB Turbo OC
8.Powersupply: EVGA 750 B3
Here is a cheaper one
1.CPU: Intel Core i5-8400
2.RAM: HyperX Fury Black 8GB DDR4-2666MHz
3.Motherboard: MSI Z370 Gaming Plus
4.HDD: Western Digital Blue 1TB
5.GPU: Asus GeForce GTX1060 3GB Dual OC
6.Powersupply: EVGA 650 B3
7.Cooling CoolerMaster MasterLiquid 240
8.Case: Aerocool Aero-500 (Window)
This build cost around 900 euros
This the first build.It cost around 1250 euro
1.CPU:I5 8400
2.Motherboard: MSI Z370 Gaming Plus
3.Case Aerocool Aero-500 (Window)
4.Cooling:CoolerMaster MasterLiquid 240
5.RAM: Crucial Ballistix Sport LT White 16GB DDR4-2666MHz
6.HDD:Western Digital Blue 1TB
7.GPU: Gigabyte GeForce GTX1080 8GB Turbo OC
8.Powersupply: EVGA 750 B3
Here is a cheaper one
1.CPU: Intel Core i5-8400
2.RAM: HyperX Fury Black 8GB DDR4-2666MHz
3.Motherboard: MSI Z370 Gaming Plus
4.HDD: Western Digital Blue 1TB
5.GPU: Asus GeForce GTX1060 3GB Dual OC
6.Powersupply: EVGA 650 B3
7.Cooling CoolerMaster MasterLiquid 240
8.Case: Aerocool Aero-500 (Window)
This build cost around 900 euros