I'm looking at getting a third monitor for my PC. I have an R9 380 and i'm currently using both DVI outputs. According to the AMD EyeFinity FAQ:
1: The first two monitors can connect to the graphics card with any display output on your product: HDMI, VGA, DVI or DisplayPort.
2:The third (or greater) display must be connected to the graphics card via DisplayPort.
3: If your monitor does not have a DisplayPort connection, you will need an inexpensive active DisplayPort adapter for it. DVI to DP adapters can be had for less than $30 USD. Every family of GPUs supports a different maximum number of displays.
The monitor I have chosen has DVI input, and I have been given a DP to DVI adapter, but I don't know if it's active or passive. The reason this matters is because i've read that EyeFinity will only support it if it is using an active adapter, and then something about having only two streams??
The adapter i have is Dell 0KKMYD and i can't find out anywhere whether it's active or passive. I can't see anything on the adapter itself without opening the packet and I don't want to do that just yet in case I have to return it.