Turn existing Mac tower to gaming rig?

Hey all not sure if I’m in the right place ; if not please kindly direct me in the right direction..

I have a gtx 1070 that I won from a contest and one of my bros has an old 2009 Mac tower that he can give me ; is there a way that I can repurpose it to a high functioning Mac with gaming capabilities (maybe through boot camp ?) if so how do I know what other parts I might need to buy to bring it up to level?

submitted by /u/GamertagxCharmychuu
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