The kinking is not too bad.
They goes like cycling around the CPU block
I chose to let the fan blowing out is because 2 full size 12mm standard fan under the video card are blowing cold air in, so I believe the internal temp are pretty low, and I need to get the hot air out.
I probabaly will test with old air in later when I got a new 12mm low profile 4pin fan
BTW my MB is Asus :)P8z77-i DX