Iris Pro 5200 is the first time I've ever looked at intel graphics, and thought they were decent. The Iris Pro was actually outperforming the A10, and competing between the GT640 and 650M, in Anandtech's benchmarks. Which is crazy good performance for an Intel APU.
Maybe it's Crystalwell? 128mb of eDRAM on package, is an almost excessive solution to address the APU bandwidth issue.... The Xbox One reportedly used 32mb of eDRAM since when used as a cache, diminishing returns kick in at 32mb. Intel's 128mb of eDRAM L4 cache would be, under that logic, built with a lot of future proofing in mind.
Anyway though, the current performance still falls under the category of "not good enough" for me personally, but maybe in a few years Intel APUs will be there. It'll be interesting to see if this effects pricing on lower end AMD and Nvidia discreet mobile GPUs, like the 650m.