Originally Posted by Wo0zy
The Asus card still uses an SPDIF loopback connection from either an internal SPDIF header or from an external coaxial SPDIF connection the same as all other NVIDIA discretr cards with HDMI audio support.
It doesn't have an onboard audio chip like the ATi solution. On the plus side this means that standard DVI-HDMI adapters work for audio
The Asus spec isn't very clear on this (I'd go as far as to say it's misleading) but I bought one just to see and know this for a fact. Very disappointing.
If you look closely at the picture, you'll see the two pins you need to connect the SPDIF loopback to next to the SLI connector.
It does work well (in fact I'd say the solution is just as good if not better than ATi's (providing you have SPDIF on your motherboard). Just don't expect anything more than 2-channel LPCM or DD and DTS passthrough. There is no HD audio support (as you'd expect from an SPDIF loopback).
right, so i should have prefaced this with my setup...
I already have the 2 pin (spdif out/gnd) spdif out from my mobo connected to the vid card 2pin spdif in. I've tried both polarities since its not clear which pin is which on the vid card...
i am using a dvi-hdmi cable and not getting any audio. Should a dvi-hdmi cable work? If not, will any old dvi-hdmi adaptor + hdmi cable do?
I immediately suspected the dvi-hdmi cable connection since i can get audio fine if i plug in my headphones to the analog jack, but i get no audio on the tv (and since the tv is looking for audio from the hdmi cable, i can't get analog audio to work as i did with my old vid card).
If its the cable, and any old dvi-hdmi adaptor will do then that will be easy enough to fix. Its just that every description of the dvi-hdmi adaptors i read on monoprice state that they dont provide audio passthrough? :shrug:
i know that there is a crude work around (nvidia driver registry hack) to force tv's (that dont have this option in their setup) to look for analog audio input versus hdmi audio input, but id rather just get the hdmi audio to work :P
Originally Posted by walford
I stand corrected ASUS seems to have implemented the same type of solution that ATI did with its card as stated in its specs and as shown in it adapter picture.
The MSI card you linked to does not provide the same functionality or adapter.
MSI definitely doesnt make it clear, but the card that I got has the 2pin spdif in and states in the manual that it supports audio passthrough with a dvi-hdmi adaptor...
Oddly enough, the page for my card doesnt state that specifically, and the picture of the card doesnt seem to show the 2 pin input, although my card definitely has the 2 pin spdif input.
If you scroll down to the MSI card i linked, you'll see the following description:
"GeForce 8600GT Chipset Features
HDMI with Audio Integration Solution (optional)
The NVIDIA® GeForce® 8 Series graphics card supports HDMI with audio integration solution. With a DVI-to-HDMI adapter and an extra signal cord through the bracket, audio source from sound card(S/PDIF) can be integrated into HDMI interface by simply plugging the cord into the pinhead located on graphics card. Only 1 single HDMI cable is required while streaming audio/video data to flat-panel display devices, such as Plasma/LCD TVs, or projector."