I've tried searching for this and got tons of hits but haven't come up with the exact answer - my apologies, because I'm sure this has been asked answered in the past. Anyway, I bought this board today and found later in the fine print on the label that it's a rev 1.0. The current models are 2.0 - what's the difference? I tried the comparison tool on the Gigabyte web site, and the subset of features they list are identical. What actually changed in 2.0?