hello guyz sorry i am a new pc gamer.i wanted to ask that i currently have a dell inspiron 3020 i5 mini tower pc. i wanted to turn it into a gaming pc.Firstly i know i will have to change my current power supply to almost 600 watts to run high end gpu. But thats not the problem.I wan to use a msi gtx 970 in it.My pc has a pcie x16 slot so i know the motherboard will support the card but i dont know that will the card physically fit into the case or if even it fits into it will there be any cooling issues?should i replace the mini case with a mid tower case?? plz help thanks