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Left 4 Dead 2 – Valve software’s venerable zombie blasting game has an excellent surround sound soundtrack and this game clearly takes advantage of the extra bandwidth available from a 7.1 audio stream, a clear win for the LPCM bit-stream from the graphics card. All these issues went away when the game was played back via the Auzentech sound card, a disappointing result. Engine noises and other samples clicked in and out of playback and music had faint audio crackling. Despite being a relatively recent game, this game suffered badly when run via the graphics cards audio output.
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Switching back to my sound card and activating the ALchemy software brought the surround sound back, pretty much results as expected.ĭirt 3 – Codemaster’s gorgeous looking rally title produced the most surprising result out of all. Below are a few games I tested with both sound card and graphics card and my aural observations.Ĭroc 2 – Starting with a legacy game title, obviously this game had no surround sound when used with the graphics cards audio due to it using the old DirectSound hardware acceleration. Compared to the 5.1 Dolby Digital compressed output of the Auzentech Prelude card, the choice of which sound device to use with compatible games should be trivial, but that’s not always the case. The graphics card has more bandwidth for audio, and can push a 7.1 uncompressed (LPCM) audio stream.

Because I play older games from time to time, I intended to keep my old Auzentech sound card (which supports Creative’s EAX and ALchemy technologies) in my system simply for backwards compatibility. In Windows there’s nothing stopping you having two sound cards of course.
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It was only when trying out some games titles that things got interesting.Īuzentech X-Fi Prelude Vs GTX 580 HDMI sound output gives PC software access to the highest quality audio In my own personal listening tests I found it difficult to hear much difference between stereo audio bit-streamed from the optical out of my soundcard and the same audio bit-streamed via the DVI port on my graphics card. The highly subjective topic of sound quality may influence your purchasing decisions, with some PC users still claiming that a dedicated sound card gives better results. If you are in that camp, then perhaps you don’t need a sound card.

Of course, many gamers don’t care about older games and are only interested in getting audio from more modern titles. No such legacy compatibility software exists for HDMI audio from your graphics card however, so by using your video card for audio output, you limit your older games to stereo sound only. Creative Labs weren’t the only company to make software like this, Asus also produced a similar program for their Xonar range of sound cards.
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This software fixes surround sound compatibility in many older games, allowing for full surround sound and other hardware accelerated audio effects to make a comeback. Luckily for those of us who like to play older games, Creative Labs produced a program called ALchemy. This includes any game that uses Creative Labs once super popular EAX hardware audio standard.
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Thanks to Microsoft’s change, anyone upgrading from Windows XP to Vista (or Windows 7 or 8) instantly loses surround sound in their older DirectSound titles. Looking back over the history of Windows as a gaming platform, the change that caused the most amount of noise from gaming enthusiasts was when Windows Vista dropped support for hardware accelerated audio. Like many things in the world of PC gaming, PC audio is a heavily fragmented mixture of competing and legacy standards. The PC audio sound-scape NVIDIA’s control panel software will detect any HDMI audio output devices
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Do we really not need a sound card in our PC’s any more? After a recent upgrade of my surround sound receiver for full Wii-U compatibility (thanks Nintendo) I decided to set about answering that question. Like me, many of you probably did a double take when you read that for the first time. As long as you have a capable TV, monitor or AV receiver to go with your modern GPU, you can simply fire up “Manage audio devices” in Windows, configure your speakers appropriately and enjoy both picture and audio down one HDMI cable. For all intents and purposes this means that modern graphics cards are now also sound cards too. The latest graphics cards from both NVIDIA and ATI come with a new feature, namely audio over HDMI. If you’re building a new PC or even just upgrading an existing rig, there’s one interesting fact you may have overlooked if you haven’t upgraded for a few years.
