So here's my problem. I have three BenQ XL2420T's and two Asus GTX 780s. I want to run all three monitors at 120hz each. However, each 780 only has 1 DVI-D port. To my knowledge, the only cable that transfers 120hz is DVI-D. I thought that I could simply buy a displayport to DVI-D adapter, but now I've been seeing versions that need powered through USB and cost $150 or so.
What do I need to do to get all three monitors running at 120hz?
What do I need to do to get all three monitors running at 120hz?