So I'm finally taking the plunge and upgrading my 5,1 Mac Pro's video card and I've been looking at the GTX 970 in order to also upgrade to an UHD monitor. While there are faster ones out there, the EVGA models seem to play nice with Macs so I'm trying to decide on what will be the most stable in the long run. From what I've read, sticking to 2 6-pin connections seems like the safest way to go but that seems to limit me to cards with a single display port (like this one) Other options are a bit faster, cheaper, and offer 3 display ports (for multiple 4k monitors in the future) but require a 6-pin and 8-pin connection. I know people have successfully adapted their power outputs to make this work but perhaps at the risk of stability. Does anyone have a feeling on the best course of action? More output options but trickier power supply or simpler power and only one high resolution output. Thanks!