Sound Card features

[SuperBox]

I know that Sound Card give better sound quality for games/music/movies and some also amplification for headphones. What other features do PCI(e) Sound card give to distinguish themselves from external DACs or even audio interfaces.
In the old days when on-board audio was basic Sound cards not only improved audio quality but also had special features like 3d positional audio, EAX. Do today's cards still have that or are they just focusing on audio fidelity(there is very little about gaming features, its mainly bit that, HZ this), which the same thing what external DACs are doing.
And there is also the issues with drivers.

So is there any point getting a PCI(e) Sound card over a DAC?

 

[Ok Go]

it depend's on wether you need those extra features or not, since imho sound quality is dependant on individual prefference.

for me personally i uses after market dac mainly for 2 things, one is because i plays bass guitar and records it on my pc and onboard audio dac has a latency that's very2 annoying to me, and second because i think the sound is way better.

those 2 is my reasons and never about the bit(well it's quite usefull when recording but that's about it) and 3d positional audio.