Sorry to be someone who asks this for the millionth time (I'm guessing.. all i could find are posts relating to heat and nothing on the x2's fan noise just the 4870) but I'm debating getting the 280 or the 4870x2. One thing i know is a factor though is the noise of the fan. Does the 4870x2 get loud like the 4870? how noisy is it (if you have both) compared to the 280? Thanks.