NinjaKolla :
VincentP :
The xonar DGX is a fairly low end sound card. The ALC898 is actually better.
http://www.hardwaresecrets.com/article/Audio-Codec-Comparison-Table/520/2
http://www.asus.com/Sound_Cards_and_DigitaltoAnalog_Converters/Xonar_DGX/specifications/
I would really only consider a high end sound card if you have high end headphones and require an OP amp for these.
Keep in mind too
If you are looking at better sound cards:
Asus Xonar DX has better signal-to-noise ratio than the ALC898 and offers virtual surround sound, but no headphone amp.
Asus Xonar U7 is similar but with a headphone amplifier and an external unit with a volume control
Asus Xonar Essence STX is a whole other level of sound quality over these
None of these are cheap. You do have the best of onboard audio on your motherboard already.
I don't want to get an expensive card. The onboard audio sounds pretty ok to me, it also has an amp so its really loud even at 30% volume. But I was just wondering whether getting a dedicated card will have any benefit or it'll just sound the same.
Your onboard sound does not have a headphone amplifier, that doesn't mean it won't be loud enough.
Onboard audio is fine for most people.
High end sound cards offer better sound, but you don't always need the best.
Cheap sound cards are no better than most onboard audio, and sometimes worse.
The sound card manufacturers state great advantages over onboard sound, but they quote the signal-to-noise ratio (SNR) of the onboard codec at 85 dB.
The codec on your motherboard has SNR of 110dB. This is really good.
My advice would be to stick with onboard sound.