Best Buy: CybertronPC CLX SET Desktop Intel Core i5-8600K 16GB Memory NVIDIA GeForce GTX 1060 240GB Solid State Drive + 2TB Hard Drive White/Red TGMSETGXM7904WR
Refurbished: MSI Gaming Desktop Codex XE VR8RD-067US Intel Core i5 8th Gen 8600K (3.60GHz) 8GB DDR4 256 GB SSD NVIDIA GeForce GTX 1060 Windows 10 Home 64-Bit - Newegg.com
Custom built Gaming PC Core i5-8400 2.8GHz 6 Core 16 GB RAM GTX 1060 120 GB SSD - AC Computer Warehouse
Acer Predator Orion 5000 PO5-610-UR11 Gaming Desktop,8th Gen Intel Core i5- 8600K, GeForce GTX 1060, 16GB DDR4, 256GB PCIe NVMe SSD, Windows 10 Home, Black: Buy Online at Best Price in UAE -
Just bought this for $400 used. Has an i5-8600k, GTX 1070 and a 600W power supply. What should the first things I do/want to upgrade with a used pc like this? :