In the middle there is tacens aura pro fan 140mm running at 5v.
Later I changed 750ti with mk-26 to gtx780 with same cooler, and 2x140mm fans @ 5v.
I was happy with how build looks, but as for cooling performance.. It doesn't work that well, if bottom 180mm fans are set to very low rpm (minimum to be quiet). Then they don't push the air through the case, only work as gentle intake. That means a lot of hot air gets stuck in the upper area of the case. Seems like there is not enough exhaust, and passive ventilation throigh top mesh can't keep up if you have high tdp card. Of course if you increase speed of bottom fans then results are great, but it isn't quiet, at least not spcr standard. Any review that shows these fans that run at "low" speed set via stock fan controller. That still is very audiable unfortunalely. If you slow them down further, it has big impact on cooling performance.
Of course setup with 750ti worked great because of how cool the card is.
I also didn't notice much difference in the performance of prolimatech mk-26, running in vertical position. However, fanless was quite bit worse, because air couldn't get between gaps in radiator, despite 180mm fan blowing right under it. Adding 120mm fan in 5,25'' area, that pushed air directly between radiator fins, that did the trick.
But comparing horizontal to vertical mount of the cooler, with fans, there was very little difference. If there was difference, it was caused by insufficient air exhaust from the case, because of 180mm fans set to very low rpm.
It is definitely nice looking case, and very well built. But I wouldn't say it is good choice for building silent setup.
What is important to note, all the noise is coming through the top, so if you play to put the case on the floor, that is really bad idea, you will hear even really good fans. Putting case on top of the desk is much better idea. Just keep the top of the case above your head level.
