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Forums › Desktop computing › Question: Graphics card, old mobo, and HDMI audio
Batman

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#171521 21-Apr-2015 15:24
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Hi can someone explain how HDMI audio out of graphics card works on a desktop.

Say if i bought a core2duo desktop. And i put in a cheap graphics card for 1080p. (*ATI vs NVIDIA??)

WIll i get HDMI 5.1 audio just like that? Or does it need another cable to connect?

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Inphinity
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  #1288601 21-Apr-2015 15:47
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If the graphics card supports it, you should see the HDMI out as an audio device in Windows which you can select.



Batman

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  #1288625 21-Apr-2015 15:55
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Ok so no mobo cable needed

Wade
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  #1288757 21-Apr-2015 19:12
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I've got a C2D Dell 755 with ATi HD4550 graphics card and can confirm it outputs audio over HDMI. I have not tested multi channel but definitely works in stereo. No additional cables etc, just card in PCie slot



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  #1288759 21-Apr-2015 19:16
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joker97: Ok so no mobo cable needed


correct.

Batman

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  #1288763 21-Apr-2015 19:18
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thanks

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  #1288784 21-Apr-2015 20:35
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Basically the graphics card has a rudimentary sound card built into it, and it uses that rather than any other sound card in the system. If you have a stand alone soundcard like a Xonar or something, be aware it will not be using that. 




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Batman

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  #1288789 21-Apr-2015 20:45
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ok thanks

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  #1289255 22-Apr-2015 13:01
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for audio via HDMI
On old vid cards it may not work (I had to replace mine with a newer card)

New vid cards, it shouldnt be an issue ...as long as the vid card has a HDMI connector, Im not sure if it will work
through an adaptor

Getting surround/5.1 to work through it is another story :-)

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