an i5 6500 blows the 860k away even though this setup won't overclock. this is the single biggest difference
Same 2 TB HDD
same 960 GPU
higher quality PSU, less wattage (450 vs 650), but this system only uses 252W
Same amount of much faster RAM
less expensive case but it holds everything and looks good.
a full version of Windows 10, not a 30-day trial of windows 7.