Check the SBM article that posted yesterday. (http://www.tomshardware.com/reviews/newegg-system-builder-marathon-q3-2015-amd-mini-pc,4307.html) It shows an 860K and i7 both paired with a GTX 970. The i7 gets 85fps at 1080p on ultra detail settings. Arma 3 is very heavy on the CPU, so an i5 might be a little behind that, but shouldn't be more than a few frames.