Thanks for the reasonable and well phrased post Geo. To provide contrast the fix has worked for me without problem since I moved to x64 a few months back.
Onboard sound has gotten better but it is still onboard sound, which no hardware acceleration and a poor DAC. Analog Devices is the only company doing proper EAX2 and they recently announced they're leaving the market.
Well, with Vista, acceleration is no longer part of the picture... Thus, you're left with either poor quality DAC's or else bad grounding issues (mostly EMI issues), and the VAST majority of buyers really don't pay that much attention.
If I crank every audio knob (virtual and physical) to 100%, I can hear quite a bit of noise coming through my onboard audio. But at that volume, if a noise were actually playing, I wouldn't be able to hear
anything for about a week from the ensuing nerve damage. At even unreasonable (but still tolerable) volume levels, there is no noise. And while I have an "expensive" X38-based board, it's the same onboard sound setup as most of the rest of Gigabyte's lineup.
This says to me that a $79 board can give you onboard audio that has sufficient quality to please hardcore gamers, but still not yet hardcore audiophiles. And yeah, it will take some miniscule amount of CPU overhead to do this -- when was the last time we saw
any benchmarks on how Creative cards are helping modern processors offload? If it's more than 5% on a modern E8400 processor, I'd be quite shocked.
Really, in the days of Vista, it's new driver model, and the ubiquiteous dual core (or more) processors available, the only thing left for "add-on" audio is sound quality. And if you're using an SPDIF / Coax connection, you've pretty much done away with what little was left to complain about.
And I'm sure there will be the retort about either software options or the possibility of noisy optical / digital outputs to some infintesimal degree, to which I'd say "show me a blind sound-test where someone could legitemately tell the difference and I'll believe you"