Hi so i have a old motherboard and old cpu that it could only support 6th gen cpu such as i have an i5-6400 cpu this was an pre-build gaming pc and i just wanna change the motherboard and cpu with a new case so far for the other i have a gtx 1070 a new 650 ps new 16gb ddr4 ram with i bought 1 month ago i wanna re use those parts and my harddrive as well so i just wanna if thats possible .