*smacks head on desk repeatedly*
Seriously...
The following wall of text is assuming you know what’s in your machine. E.G. if you’re asking if you need a sound card because you don’t know whether your motherboard has an integrated chip you might want to buy a pre-made PC instead of components. They all come with integrated sound these days and if you’re going that route, it’s unlikely you’ll want a discreet sound solution as disabling the on-board card can be a pain in the ass at times. I realize that might sound condescending, but from this thread alone you should realize that the people that like discreet sound cards are a step apart from normal computer users, and even the normal power user. Discreet cards really only serve a good purpose for people who know why their buying it, and not so much for people who think maybe they should because it exists. If your still here then feel free to read on and maybe get some answers to some points that have been made in this thread.
The most common reasons I know to buy a sound card these days are: 1) You want a better (S)ignal to (N)oise (R)atio. 2) The sound card has features you desire that the integrated unit does not and you’re willing to pay another $100-$300 for them. 3) The software included with the sound card means it’s just as cheap to get a nicer discreet product than purchase the software independently.
So to me, a lot of what is being said is inane. Yes there is loss whenever you have an ADC process occurring. However, going from digital to analogue is generally lossless. In a stereo setup you want as few Analogue to Digital conversions as possible, with 0 being the best (obviously) and it's pretty easy to do. That said, you want your best converter (usually in your receiver) to do the DAC as that's pretty much the whole point of a midrange receiver. A high end receiver will usually come in parts and the DAC will be a separate unit from the AMPs, if you have a high-end receiver I doubt you need this thread. A low end receiver is largely worthless and should only be considered with a discreet sound processing unit if it will do analogue pass-through so you can use it as a switch.
However, if you have a nice sound card like the new Asus or Sound Blaster HD series and don’t have an upper midrange receiver, there's a good chance the card is actually the better place to convert the signal. If you still want the receiver in the mix use it only if it will do analogue pass through. If it wants to convert back to digital (because you have an HDMI connection to your TV and your using the TV's speakers) then you might as well leave it digital the whole way through. Frankly though, if you’re using your TV’s speakers and you’re happy with that, then a discreet solution is likely a waste of money for you. Note: the same goes for monitor speakers. If you’re using the speakers on your monitor, then a discreet solution is the wrong solution.
For those uninitiated in the Audiophile ways there is often ambient noise that can be heard when the computer is not processing sound. Usually as a high pitch whine or soft static coming from your speakers. If you hear it, and can't stand it, a discreet product or receiver using the computers digital output might help. However, this noise is generated by the proximity of other electrical devices. As most discreet sound cards are not EM shielded, it’s possible to get a discreet solution, put it too close to another add in card (I.E. the video card) and get a similar noise. As most add-in cards are now PCI-E and the 1x ports are right next to the video card, this is fairly common and accounts for most of the negative comments sound cards receive on Newegg. I.E. the person that bought it was stupid and didn’t know what they were doing.
One other point of stupidity in the industry: HDMI prevents discreet card providers from separating signals which is why most Radeon products now have a sound processing unit. Both the Video and the Sound have to be converted on the same board in order for HDMI to deliver sound, so if you want sound through HDMI make sure your graphics card supports this. If you’re buying premade look for a (H)ome (T)heater PC as it will meet the qualifications to use HDMI cables to send sound. This is largely a DRM issue that once again punishes the paying customer as the standard creators didn’t want people to siphon off the sound and get master quality recordings of the media.
Hopefully this will calm some of the bickering down and actually answer the question asked…
TL😀R;
If you don’t know why you want a discreet sound solution, don’t buy one and trust your Motherboard will have a sound option you can use instead. If you want sound to come from your HDMI, get a graphics card with a sound processing unit as a discreet solution won’t help you because the people that made the HDMI standard are worthless and hate paying consumers (yes there is bitterness there).
_WAter_