How much sound quality improvement will i get by upgrading from a motherboard sound slot to a sound card???

the new sound card supports 7.1 speakers so you must at least purchase a 7.1 speakers to maximize your sound card's. If you have a good sound card and also a good speakers, then the difference can be significance.

The only thing is that your mother board has 2 channels in your sound card its 7.1channels. That means the quality of your sound card is improved provided you have a 7.1 speaker system attached to it.

I play alot of music through my main PC. What I'll say if you have tiny speakers you'll get a tiny sound. It worth buying better speakers before you get a better card. I had a set from tesco of all places for about £17 with a bass boost type speaker. Best thing I ever did.

If you are carrying out general tasks like playing, mp3 music, divx movies etc. absolutely no difference whatsover.

You will only notice the difference if you are really into music. The main point of having a seperate sound card is to free processing power so that video games go quicker. If you are doing recording that would be another reason.

Its true what the other poster are saying about upgrading your sound card about how it doesn't increase performance that much. A better way to get improved sound quality would be to buy a better set of speakers or headphones. Thats how you get improved sound quality.