OK so I was considering buying some speakers for the PC but most of the ones I have been looking at have sound cards built in to the speakers so they interface to the PC via a USB. This concerns me a little becuase surely a USB interface is a lot less efficient than a PCIe interface? So a USB sound card should put more load on the CPU than an internal card? The intention is to use the speakers for gaming so I don't want an unnecessary CPU load. Can anyone tell me what sort of impact using a USB interface has on gaming? Or am I worrying about nothing becuase my ideas are just completely out of date?? Lol.