Mine is very close to this unit, I ran a 3960x back in the day... 4.8GHZ and wPrime 1024M... it only dropped temps by 1c.
These units are beasts, built for benching. Nothing I throw at it hardly even touched it.

I had mine tuned for loads, temps were -40c if I remember correctly, I will have to look up some pictures to see what I was getting to be sure.

I don't think a 6700K will even touch this beast.