Well I initially came here to
ask this question, but seeing as the basic consensus is aligned with what I already believe, we can skip that.
But I have a couple points to add, based on living the audio life... I am not an audiophile in the
consumer sense in terms of my home system/listening habits (cf.
this), but I have fairly extensive pro audio production experience.
The differences when it comes to audio
quality,
per se are not going to be very evident when it comes to gaming. For the most part, game audio is probably not recorded using such quality equipment and facilities as are used for music or movies. (Some certainly is, which is why you hear a game like CoD costs >$100M to make! But dare I say "most" is not.) Also, video game audio isn't going to have the wide dynamic range of music/movie audio, either. Game audio is pretty much "turned up to 10" the whole time. Modern pop music is too, but movies, classic rock, jazz, classical music, etc. have much more dynamic range, and frankly a lot of the time the quality -- or lack of -- of your system is going to be revealed in the
quiet parts, not the loud ones! Also, if you are listening to music in any compressed format -- e.g. MP3, AAC (iTunes), etc. -- a lot of this subtle quality is already obliterated from your music during the encoding process.
Only formats like CD, Blu-Ray, CD-quality WAV/AIFF/M4A, as well as any existent or emerging HD audio format you happen to come across are going to deliver
source material that is even demanding of this level of quality reproduction.
So, if your main audio needs are based on gaming or "MP3s" listening, this is definitely a vote in the "no" column.
Also, FWIW, my response to astrallite's suggestion that you should keep your PC's output low: Keeping the output low may reduce the
amplifier noise of the card, but there is still going to be a base floor created by the card's background noise that this will not affect. So, you turn your PC's volume down
too much, and you wind up with too low
SNR and wind up amplifying a bunch of noise along with the desired signal. YMMV but in these sorts of scenarios I generally work with the source device's output at anywhere from about 65-85% of max, to keep a decent balance between amp noise and device noise. It's really just a rule of thumb and I would experiment to find the best results in any given situation -- even to the point of using max volume,
or extremely low volume on the source device, as astrallite suggested, if it happens to work better for the given scenario.
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To get back to the "asking" side of the discussion, though, my interest is: will an outboard card really take the load off CPU, system RAM, etc. resulting in better performance?
I saw another thread where responders were saying the onboard RAM of sound cards is not even utilized by most games, but that was from 2007 so things may have changed...
TY for any info!