Do any AMD GPUs do 5.1 encoding via HDMI? (Title and first post edited) Do any AMD GPUs do 5.1 encoding via HDMI? It seems I'm reaching a dead end regarding Nvidia based cards being able to do a true 5.1 encode via HDMI, so I'm now looking to see if any AMD GPUs do. In a digital audio pass through, I've read the hardware has to have 5.1 encoding firmware such as Dolby Digital LIVE, and DTS Connect to get true 5.1 surround from games. My ASUS P6X58D-E does not support DDL or DTSC, and it's too soon for me to upgrade to another MB. I'd also prefer not having to get a sound card if I can avoid it. So, the question is, do any AMD GPUs do 5.1 encoding via HDMI?