i own an Extreme 3 motherboard (with an I5 3570K) and i am looking into a better cooling solution. the Noctua D15 seems to be a great solution but due to the sheer size and weight i am very worried about the stress it would put on said board. this has me hesitating on getting one or getting a H100i from corsair. I also move my computer around quite a lot as i have to take it with me often.