The Guru of 3D published a review on the AMD Eyefinity 3-panel Mixed Resolution
A quote from the article:
AMD recently added a new feature to their Catalyst 14.6 Beta drivers, you can now mix several monitor resolutions and still create an Eyefinity (multi-screen) gaming setup. Funky stuff as you can now finally put these old dusty monitors on your attic to use, and yeah we just had to check that out ourselves. So we will take two Full HD monitors and combine them with an odd WFHD (2560x1080) resolution monitor to see if AMD's story holds up. The end result we'll show you is something wide, very wide. To be able to actually games on such a massive resolution we will pair the setup with the beastly AMD Radeon R9 295x2 and will show you that multi-monitor experience.AMD Eyefinity 3-panel Mixed Resolution Review @ Guru3D
In the past if you wanted to create an Eyefinity setup, your monitors all had to be of the same size and resolution. Back it up even further into the past and the monitors even needed to be of the same series and brand. A lot has changed and now with Catalyst 14.6 Beta this new driver brought a couple of interesting features to all ya gurus including Mantle support for laptops with Enduro configurations, JPEG Ddecoding acceleration and expanded color control capabilities. In this article however we'll talk about Eyefinity setup in 3x1 solely, yes with Catalyst 14.6 AMD brings mixed resolution support to the table.