My second build (i5 8600k / gtx 1060) by Summity - Intel Core i5-8600K, GeForce GTX 1060 6GB, Thermaltake Core P3 TG Snow Edition ATX Mid Tower - PCPartPicker
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? :