So I'm playing mainly PlayerUnkowns Battlegrounds at the minute which can require you to pin point where shots are coming from, which I seem to be able to do even with stereo, but would like to elimate the buzzing when things are quiet.
I've also picked up a stand alone mic, to add to the confusion that seems to pick up a lot of interference when using comms. I'm guessing this just comes down to the device though, and there's nothing that I can plug a USB mic into that will fix this?
If having actual headphone setting game itself can do HRTF/binaural-simulation.
But with Windows Vista killing overall audio advance in PC games it's up to game developer how much effort they put to sound engine/"renderer" of the game.
So while one game could give good results by itseld other might output plain stereo or some standard crossfeed to avoid "in left ear, in center of head, in right ear" sound.
Sound card has advantage in that it needs source software to be only able to output standard 5.1 surround sound.
This is about the best comparison I've found:
And when made by respectable company is definitely less prone to interference than "We just needed those ticks to feature checklist" integrated on cheap motherboard.
USB microphone has its own ADC (input part of sound card) so motherboard/sound card changes won't affect to it.
If question is about its design being interference prone device called USB isolator might help.
Being external connected to USB doesn't release sound card from needing good design to avoid interference.
And properly done internal can give equally clean (far beyond human hearing accuracy) sound to external.
Despite of all that "you need external DAC for high quality audio" hype... While in some cases those fashionable USB DACs have actually needed such USB isolator.
Also in made cheaply case that ADC itself might have high noise level if microphone produces some constant noise.
Anyway at least sound card with mic in allow trying any 3,5mm mic.