Best equipment to use?

I'm asking this for my friend, Andrew. He is a big computer geek and he wants to try and build a computer with me. He is on a budget of $150 right presently. After we finish, he is going to keep it and use it for making videos and gaming deeply. Please answer with a list of upright components he can use to make a useful computer.
Answers:
Right presently, you could get a 1TB SATA drive for it, but that's it.

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