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anandtech:
anandtech.com/show/4051/nvidias-geforce-gtx-570-filling-in-the-gaps/2
Here it’s covered by the usual NVIDIA configuration of 2x DVI ports and 1x mini-HDMI port, with the second slot occupied by the card’s exhaust. This also means the card can only drive 2 of the 3 ports at once, meaning you’ll need an SLI configuration to take advantage of NVIDIA/3DVision Surround. Meanwhile HDMI 1.4a for 3D video purposes is supported by the card’s mini-HDMI port, but audio bitstreaming is not supported, limiting audio output to LPCM and DD+/DTS.
techspot:
techspot.com/review/346-gigabyte-geforce-gtx-570/page2.html
Finally, the I/O end of the GeForce GTX 570 is identical to the GTX 470, featuring a vent across the top of the panel and a pair of DVI ports with a mini-HDMI port below. The display controller now supports HDMI 1.4a, though we should point out that full audio bitstreaming is not part of the deal, which was also the case with the GeForce GTX 470.