Overclockers Club published a review on the PowerColor Devil Box Redux
A quote from the article:
My initial reactions to how the Devil Box improved gaming performance have not changed much after the change in baseline hardware. I found that even with a device such as Intel's high performance NUC as the backbone of your system, you still can really game at almost full speed just by using a device like PowerColor's Devil Box to fill your gaming needs. My results shown above are at 2560 x 1440 as a proof of concept that if you have the monitor real estate, you can indeed game at up to 1440p resolutions with the two cards tested. That being said, the sweet spot for resolutions will ultimately be limited by your choice of the video card that will populate the confines of the Devil Box. The only challenge I saw while testing was that the green card had a hiccup in a couple games and did not perform as expected. Driver changes usually fix small things like this in specific games. Smaller form factor PCs are becoming more common place each and every day. As integrated graphics solutions still struggle to deliver gaming performance, there is a solution: PowerColor's Devil Box!PowerColor Devil Box Redux Review @ OCC