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If you have no interest in a ready made machine , maybe you should. By that I mean find you a pre-built machine, with decent reviews. hopefully a machine that is also in your price range. Then get busy copying the hardware specs and sourcing it all out. If you have a vendor you already work with, I bet you will come out ahead(if your spec is cheaper is that ahead or behind). hmm

Planning to do a rig build myself.. found many reddit groups