Can I use my 2012 Mac Pro with an Sapphire HD 7950 Mac Edition video card (two mini DisplayPorts) to drive this monitor?

What adapter do I need? Card should be capable of driving 5k monitors. I guess two cables to drive each half of the monitor? Or maybe use it in 4k mode? Or anything possible via DVI-I?

LG UltraFine 5K Display

LG UltraFine 5K Display

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