I have a gigabyte h110m s2ph motherboard and I dont have a sound card and when I use the rear panel audio the sound quality is muddied and bad but the front panel audio is much much better my case is cooler master 912 HAF and it has 2 front panel audio inputs one for headphone and one for mic but the rear has three (Green,Red,Blue) I dont know what the blue one is for I tried using it but I cant recall if there any difference between it and the green one also do you think I should buy a soundcard or DAC what will be the benifits I get from doing so?