However, it wouldn’t do justice to the cast-iron Victorian radiator to use anything other than one of the best gaming CPUs and best graphics cards available. Those tend to require significant power and are demanding when traditionally cooled

1. This is from a company that seems to sell cooling solutions, altho there website is utter shit so who know what they actually do. So of course it should be new hardware.
2. GPU need a ton of power since years, on top of the previously already high power demand.