>my testing has shown that a cheap “High Speed HDMI Cable” can work at 60Hz with 4K resolution with the right combination of video card, monitor, and drivers.

>my testing has shown that a cheap “High Speed HDMI Cable” can work at 60Hz with 4K resolution with the right combination of video card, monitor, and drivers. My testing was completely contrary to this. I bought around 10 cables that claimed to support various dp and HDMI specs, trying to achieve 4k@60 on my MacPro.. in the end only one cable actually succeeded, and the longer version of the same cable from the same manufacturer would not work, and even the "good" cable would flicker if the ambient temperature was too low.