OC'ing SB or IB stops at or below the sweet spot of 4600-4400 for general run of the mill users, so IB is definitely a fine buy with the vastly improved IGP that trades games in single player mode before multiplayer mode hammers the amd apu, a shocking development.
Intel did a fine job on the HD4000, and for all the usual users, the 4600 spot before voltage or temps start to accelerate is just fine, most won't want run above that, so for two minutes of thrill time who cares, the freak OC'ers can still get their jollies.
IB is a definite large success, and unless you plan on sustaining a gigantic 24/7/365 OC and have a huge discrete video card to go along with that, on the unstable bleeding edge, IB's added heat on high OC is meaningless, PERIOD.
Obviously a sane user would choose IB with zero regrets and zero hesitation - a better chip with a much improved grpahics on a newer tech board for the same price.
It doesn't take a rocket scientist to cause confusion, it takes a raging gaggle of non owning end users who don't use an extreme 24/7/365 overclock anyway to whine and moan and complain and amd fan boy out and stretch their twisted minds babbling insanities that matter for only a very few freaks of the world with deep pockets and deeply expensive OC hardware all around.
IB did a smash up good job with their new HD4000 graphics increase, and OC's well to 4,600 with no ill effects compared to SB.
Get over it people. You aren't using a 24/7/365 massive OC on the bleeding edge of instability, especially if you are using a red amd card that already has inbuilt stability issues too.
It's amazing to me how out of control the thinking gets, and how insane it all sounds when back on earth, the choice is attained is absolutely clear, very, very easily reached.