Forum

I do not know what causes it, but I must say that it looks amazing

How did you get 64GB of memory for free? If I got it for free, I'd sell it and get something better. 1600MHz is old news, so is DDR3 as a whole. With an Intel chip, I'd be looking at 2400MHz or higher. You could probably sell that kit and get a nice 16GB kit and run it at much higher clock. The problem with that much capacity is that it puts additional strain on the IMC and motherboard. Sure, maybe in theory they support 64GB but getting it stable and smooth is a whole other beast. That could be your whole problem. Maybe it only does 64GB at 1333MHz or maybe it needs a BIOS update. Get rid of it and get a good 16GB kit unless you like ram disks which are over-rated when fast SSD's are on the market.

As far as the fan controllers, I'd drop them too and do it all on the motherboard. I used to do the whole controller thing but it's much simpler and easier to just have the motherboard monitor temps and speeds for you. Using rheostats puts more heat into your case and wastes energy. If you really want a dedicated fan controller,
I also think that power supply is way overkill, probably 2x the wattage you actually need and because of find one that's PWM (pulse width modulation).
that, the quality suffered. I'd sell that and get a nice Corsair AX1200i which is still overkill but is much better built and more efficient.

Aside from that, you could benefit from some serious cable management

:3 i volunteer to adopt the 3rd card you don't need xD .

Might be interesting to see how that psu copes with an intense load (which i guess requires something even more power thirsty of these cards!).