I just got a Steelseries Siberia V2 headset as a Christmas present. Now I'm wondering, if I need a "real" soundcard. I currently use the onboard audio on my Gigabyte GA-Z77X-UD3H motherboard (VIA VT2021 codec). Will upgrading to a "real" soundcard make a big difference sound-wise? And which soundcards can you recommend? I'm on a budget, but it's not like crazy strict.