for the power supply talk over on the rog forum there been a few people that have said there 8 pin (4 py 4 eps cable) only have would fit into the 8 pins on the mb. all asus mb my sabertooth does the same thing the ram led blinks red (there no green led)
then turns off if it stayed on or blinked you have an issue. I seen some stock intel heat sinks do that. i think it how the cpu fan and mb fan chipset talk to each other. as long as the fan spins up and you dont get any fan failures it fine. (just make sure you install the new cpu code on the mb bios. there a few bios updates. (use a usb stick and do them in order.) ie flash the bios go into it hit f5 save as default and boot into windows..then shut down. boot back into the bios and flash then next one and repeat.