This motherboard says it supports 6-core, but cannot handle significant overclocks with it. The mosfet simply cannot handle the amount of power the CPU needs.
I tested this theory by overclocking the 1055t to 4.2 GHz. Everything ran okay, Prime95 ran just fine. When I went to Linx, or Intel Burn Test, the capacitors around the mosfet started to whine. About 20-30 seconds later, the motherboard went into protection mode due to overheat and shut everything off. The CPU temps never went over 53c. The NB never went over 40c.
Taking this same test, I turned 2 of the 1055t's cores off. Linx and IBT ran smoothly and there was no whining coming from the mosfet capacitors.
This board was never meant to handle 6-core CPUs. Get your money back if you can, because any "stable" overclock with the 1090 or the 1055 just means the inevitable is delayed.
I have not tried aftermarket mosfet cooling, but I am stongly considering it. I did not want to buy a new mobo, but will if I have to.