Can the HDMI output on GPU send 7.1 signal?

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ozzyosb

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Sep 1, 2009
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This is for my HTPC. After doing some research I'm getting mixed answers on this. Basically what I want to do is plug my HTPC into my AV receiver using the HDMI connection of a GPU.

This is for movies not games. Will it send 7.1 signal? If yes, any recommendation on a gpu that would do the job would be appreciated. I was thinking of getting a cheap Nvidia 710.
 
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MceraWV
I can verify from personal usage that the MSI GTX 970 Gaming 4G is capable of outputting 7.1 audio over its HDMI port, along with a 1080p video signal. I would assume that any modern GPU will be able to do the same, as the ability to transfer 7.1 audio is based primarily on port bandwidth opposed to rendering power. You have to dig around in Sound in the Control Panel a bit, as at least for me Windows didn't detect the 7.1 speaker setup by default, but I don't see you having any issues with what you're trying to do.

EDIT: This is assuming that whatever content you are playing also has a 7.1 audio channel and is set up correctly to output it. I was addressing the issue of simply having Windows recognize the 7.1 speaker setup and...
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getochkn

getochkn

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Jul 2, 2006
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Well usually with a PC to AVR, you set the PC to send the surround signal in "passthrough" in the media app, so that way the audio signal is sent to the AVR and it decodes the 7.1 signal in Dolby or DTS or TrueHD or whatever format it is. Your AVR company paid money to license decoders to be able to decode the surround signal, so the PC just sends the audio as it get.
 
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MceraWV

MceraWV

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Jan 29, 2016
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I can verify from personal usage that the MSI GTX 970 Gaming 4G is capable of outputting 7.1 audio over its HDMI port, along with a 1080p video signal. I would assume that any modern GPU will be able to do the same, as the ability to transfer 7.1 audio is based primarily on port bandwidth opposed to rendering power. You have to dig around in Sound in the Control Panel a bit, as at least for me Windows didn't detect the 7.1 speaker setup by default, but I don't see you having any issues with what you're trying to do.

EDIT: This is assuming that whatever content you are playing also has a 7.1 audio channel and is set up correctly to output it. I was addressing the issue of simply having Windows recognize the 7.1 speaker setup and being able to output sound to it over HDMI, while getochkn is referring to your media player's ability to decode the audio signal.
 
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wezegan

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Aug 13, 2016
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Yes it is! My TV has analog output, I just send the audio over HDMI to my TV and the TV to my 7.1 setup, without sound card and I can play DTS/Dolby 7.1 live!!!
Do you want the card only for the sound? Playing and sound? Because you can buy a decent GPU card and a decent Sound card and I think it will be worthy, if you plan to play games on 7.1, you need Dolby Live (to transmit 7.1 at a real time), if you need it just to see movies I think the card will do or maybe a cheap Sound card, there are several USB cheap sound cards that can transmit you DTS/Dolby, I used one of these cards but NO LIVE SOUND, just recorded stuff like a movie or something like that.
 
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