HDMI through motherboard and DVI through GPU

flamingoezz

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Oct 22, 2011
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I'm trying to hook my pc up to a home theater receiver so i can hear the sound when gaming and watch movies occasionally. I have a 275 GTX with 2 dvi's but that won't give me sound from my understanding. Can I use the hdmi on my motherboard while without taking too much fuss in taking out the gpu or changing bios settings each time i want to do one of the above?

im using windows 7
 
Yes onboard HDMI will get disabled when using a seperate video card on most motherboards... you could consider buying longer/extra audio cables for the sound outputs of your motherboard to your reciever... along side your DVI cable... check on the "BAY" for low cost 25' or 50' audio cables/adaptors...

I have 25' DVI/HDMI cable/adaptor to my TV and a 25' stereo 1/8" cable going to my TV audio input... and my TV audio output to my Reciever... So my one TV remote will control the volume of the Audio... Works great and I have "clone" mode setup in Windows 7 and XP... Can have both Monitor and TV on seperately or together without any software or BIOS changes... Can boot with my TV display or Monitor Display... Windows doesn't care...

To get "clone" or "extended" modes in Windows... you need to get your TV "Identified" and resolution set... after that it's just turning on your TV... set your input and enjoy what ever is being displayed from your computer...
 

flamingoezz

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Oct 22, 2011
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I dont think so,

if ur card has Dual Link DVIs, u can just use a DVI-HDMi adapter

i have an hdmi run through the wall already..but if i get an adaptor, I still need audio correct? the dvi port won't transmit that, right?

do cards normally come with that adaptor? i know they normally come with a bunch of adaptors but can't locate my box yet =/
 

Lutfij

Titan
Moderator
the GTX 275 can do it...for crying out loud, does anybody read posted url's anymore?

your 275 has a 2 header pin that connects in tandem with your mobo's onboard audio panel

comp3-8.jpg


more here

It's the SPDIF output on the motherboard that you need to connect to the card, so check if your board has one.
but there is one BIG issue here, we need to know if the OP's mobo can support this - his card can do it for sure but the mobo has to have the proper connectors to hook into the 2 pins on the GTX 275 which leads me to ask - what are your system specs please?
 
Hello... You can WIKIPEDIA any type of connector types and pinouts such as HDMI-DVI-SPDIF... but it also depends on the wiring and operation with your motherboard/Video card... The DVI standard is not designed to carry AUDIO signals... so getting the proper adaptor to connect your video card AUDIO to HDMI, THRU DVI might take some research, trial and error, and/or a special adaptor $$$... I have not done this...

I chose the simple "run a cheap, easy audio cable to my TV" approach... with parts from the "BAY"...

in your case... video card DVI to wall HDMI, Wall HDMI to HDMI TV for video... Long 1/8" stereo audio cable to TV audio input or Audio Reciever and JOB DONE!!!
 

Lutfij

Titan
Moderator
@ flamigoman - go here - http://www.asus.com/Motherboards/AMD_AM2Plus/M4A785M/#specifications

and you'll notice this - 1 x S/PDIF Out connector (if you scroll down to I/O connectors list of connectors) so thats the header you'll need. find a 2 pin wire that will go into your GTX 275. once you've established the sound out into your card - you can get a DVI-HDMI dongle and then have the sound pass through with video to your audio system/tv.

Edit; just noticed the dongle link you posted - yeah that'd do!

if you think all this is a hastle then going the "cheap audio cable" route is the best as you can connect it via jacks from source to display device.

more to look at if going HDMI route;
http://www.avsforum.com/avs-vb/showthread.php?t=1252602
http://www.amazon.com/SPDIF-Cable-Pin-Sound-Card/dp/B000I9903G

aha! this is what you need!
http://www.amazon.com/CBSPIDIF2-2-pin-Internal-Digital-Audio/dp/B0044412V4/ref=pd_bxgy_e_img_b
 

flamingoezz

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Oct 22, 2011
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yes, i figured it out..just needed to change a default setting in sound portion of control panel.

next issue..can i view on my computer screen and have just audio travel to my audio receiver? my screen just shows my windows background, while i use my tv as the monitor..i prefer to use pc monitor for video for gaming
 

Lutfij

Titan
Moderator
all that hassle - you could go with a two monitor setup and identify which one is which - but for the sound thingy - the initial advice i gave of running the old fashioned cables from audio card to sound device was the best option...all this time and effort... :/
 

flamingoezz

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Oct 22, 2011
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it can play on both screens at once so long as the audio still passes when the tv is off. im going to do some testing later on. don't know if its possible to pass video through one dvi port and sound through the other on my gpu