Yes, that's why I'm curious. It'd have been fine if it was 50 Watts increase in power, but jumping from 450 Watts to 600 Watts is really ridiculous, specially for a new bronze Corsair power supply.
I'm going to open up my PSU, GPU's, whole system and suck some dust through the stuff through a light vacuum cleaner. Let's see what happens.
just did the exactly same operation yesterday
cleaned all radiators form my watercooling system
as result my temps dropped about 10 celius, that is a huge drop for me
now it is much better and quiter