I’ve been playing around with this for a few days now and the internet has either really outdated or really unhelpful information. Now that I’ve got it working in all it’s tiny 4K pixel glory, I figured I would give back.

I did this on Windows 8.1 Professional using a Intel Core2 Quad Q8200 and 2 HD5770 graphics cards in cross fire. These are admittedly old hardware components but if you are using something different I can’t guarantee your results. With that being said, the results for me have been amazing.

The process is relatively simple thanks to ToastyX and his utilities. In the interest of giving credit here’s a link to the post that really made this all possible for me. If you don’t want to wade through all that the steps are below.

1. Download and install the latest CCC drivers from ATI’s website.
   
2. Download AMD/ATI Pixel Clock Patcher – For whatever reason ATI seemed to be refusing to let me use the dual channel capabilities of the cable that came with the Seiki tv. Apply this patch to get at all that bandwidth.
3. Download CRU-1.1 – This amazing application lets you override the available options from the display settings menu.
   
4. Click add and set your resolutions to 3840 by 2160 by 30hz and choose LCD Reduced to save some bandwidth. I was unable to get it to work without this option unless I reduced the refresh rate. Hit OK and restart your computer.
   

That’s all there is to it. Enjoy all your extra resolution without any additional hardware.