I'm looking to these headphones for gaming, movie watching, music, and normal computing. I have a crappy pair of turtle beaches I bought for $40 and the buzzing is driving me insane. I've seen some awesome reviews on these headphones and I'm wondering if I'll need a dedicated sound card or DAC. I have no idea how any of this works, so any recommendations and explanations would be greatly appreciated. I'm using onboard audio and I'd like to try to stay under $150 for the sound card, if I need one.