Now you just need to interface your PC to an arcade and power it.Also, someone in your network might just be tossing one out that you can pick up for free.I will be using such a PC as we go along in this discussion.If you don't have a sacrificial PC handy, a suitable one just to run MAME will cost you about $50 shipped from eBay.
Basically, the PC sitting in your closet for the last few years since your last upgrade can be repurposed for use as a PCB in your arcade cab A decommissioned PC costs you nothing.I am sure others opine differently, but there is tremendous economic value in doing so, so let's examine them: In my opinion, a PC is the best way to leverage emulation to be able to play old arcade games in a single arcade cab.