Its not really about 2.1 vs. 5.1. Almost any sound-card you get today supports 5.1. Do you really get 2.1 sound cards today? :roll:
The question is about the resolution/quality you get with a good sound card. Just check out the url I posted previously. SNR, DAC and playback resolution are the key for quality. The other thing that matters is the hardware acceleration you get with a good sound-card. Most creative cards support hardware decoding of quite a few formats (dolby digital, DTS, blah, blah, blah). Finally, if you are into gaming, you get EAX effects.
I would recommend atleast a SB Live! soundcard.
The question is about the resolution/quality you get with a good sound card. Just check out the url I posted previously. SNR, DAC and playback resolution are the key for quality. The other thing that matters is the hardware acceleration you get with a good sound-card. Most creative cards support hardware decoding of quite a few formats (dolby digital, DTS, blah, blah, blah). Finally, if you are into gaming, you get EAX effects.
I would recommend atleast a SB Live! soundcard.