This is pretty much just an upgrade from v2. https://uk.pcpartpicker.com/b/TLm8TW
Had a few problems with GTX 970 SLI but fixed it now. Enjoying the I7. Very good for streaming.
The 2 970's are more powerful than the Titan X and Fury X which is very cool. :D
Mk IV - Full custom watercooling.
Mk V - Unknown.