PC's with solid core conductors?

The stuff in the walls of your house is probably Romex - ask someone at home depot and buy some more and a couple of plugs to terminate it - that way you can match the transmission impedance perfectly and have no reflections at your plug....

Sorry I am not actually being all that serious, IMHO, you are worrying unnecessarily. If you want cleaner power then get some active elements - a conditioning power bar or a line conditioner but don't worry about the wires - provided, of course, they are rated appropriately for the power requirements.

I do not know your definition of silly expensive is, but the Harmonic Tech's Pro AC-11 power cord is the best bang for the buck solid core copper power cord in the market today. The newer version comes with Furutech's high-grade ends and cost about $120 for a 1M in the used market. Older version with Hubble AC plug and stock iec can be have for $100.

Don't waste time on others.

Thanks Dtsag, I'll check HT out.