Extra VRM phases huh? Gee, that sure helped me on my HIS 7950 IceQ with a -as of now- fried MOSFET. What we need is higher quality phases, not more of the same crappy ones. I'm thinking IR powerFETs need to be standard on mobos and cards now, its 2013, no mo' ancient tech please.
The specs seem off for a 280X which is the rebranded HD7970. 850MHz is too low of a stock clock speed. I thought they were all going to be 950MHz stock, some at 1GHz and others (very few) overclocked well beyond that.