So there is going to be a huge jump in iGPU this gen, so while the CPU improvement will be even more boring than Ivy was (only lower power consumption this time, seems to be no improvements in IPC), the GPU improvement will be one of the biggest ever. Intel’s Ben Widawsky says and I quote, "Broadwell graphics bring some of the biggest changes we’ve seen on the execution and memory management side of the GPU… [the changes] dwarf any other silicon iteration during my tenure, and certainly can compete with the likes of the gen3->gen4 changes.” Just for reference, Gen 3 => Gen 4 was GMA GPU from 3000 to X3000. I welcome this GPU improvement greatly as CPU performance is great. It is GPU that is lacking and a combination of the two which is the future. Seeing as Intels iGPU is already more efficient that AMDs, but not given as much die space, this should make that difference up. I really care more about this because Intel's Atom platform is sharing the iGPU now days and so this will make it competitive on GPU side compared to the Mali and Adreno and Nvidia's upcoming Logan. It should also make GPU on mobile irrelevant unless you go into the GTX range, where as right now Haswell made only the low end and mid range GT lines irrelevant.
here the link guys http://www.extremetech.com/computing/170291-intels-14nm-broadwell-gpu-takes-shape-indicates-major-improvements-over-haswell