Searching the web, this article comes out to $637 but is missing the blueray played, bluetooth, dolby atmos, controller etc:
Building a PC with Xbox One X specifications will cost you at least $600
1. AMD FX-8320E 8-Core CPU which is selling for around $119.99
2. MSI 760GMA-P34 Motherboard which is selling for around $49.99
3. Kingston ValueRAM 8Gb comes in at around $54.76
4. EVGA 400W PSU which comes in at around $28.35
5. Asus GeForce GTX1060 6Gb Graphics card which costs around $293.99 (You can swap it out for the RX580)
6. WD Blue 1Tb Hard Drive (7200rpm) costs around $49.99
7. Thermaltake PC Chassis coming in at $39.99
This one is $497 but also missing the controller, bluetooth, wifi, blueray player and more:
https://pcpartpicker.com/list/XqYrQ
$752
System Build - Core i5-7400 3.0GHz Quad-Core, GeForce GTX 1070 8GB Dua... - PCPartPicker
Building a PC with Xbox One X specifications will cost you at least $600
1. AMD FX-8320E 8-Core CPU which is selling for around $119.99
2. MSI 760GMA-P34 Motherboard which is selling for around $49.99
3. Kingston ValueRAM 8Gb comes in at around $54.76
4. EVGA 400W PSU which comes in at around $28.35
5. Asus GeForce GTX1060 6Gb Graphics card which costs around $293.99 (You can swap it out for the RX580)
6. WD Blue 1Tb Hard Drive (7200rpm) costs around $49.99
7. Thermaltake PC Chassis coming in at $39.99
This one is $497 but also missing the controller, bluetooth, wifi, blueray player and more:
https://pcpartpicker.com/list/XqYrQ
$752
System Build - Core i5-7400 3.0GHz Quad-Core, GeForce GTX 1070 8GB Dua... - PCPartPicker