Anything with GT3e will have Intel’s Iris Pro 5200 graphics, while 28W SKUs with GT3 will have vanilla Iris 5100 (non-Pro). Any 15W SKUs with GT3 will be HD Graphics 5000, and GT2/GT1 parts will also be identified as Intel HD Graphics.
This new ''28W'' blurs the line between ULV/SV, should be a nice fit for 13.3'' laptops (2013 Macbook Pro Retina 13?) or larger ultrabooks. 15W parts will perform better than ULV IB despite lower TDP.
Iris Pro will be exclusive to quad-core parts, and the advantage there grows to 2.5x in 3DMark11. There's a slight increase in processor TDP here, but obviously much better performance. That last bar is with the i7-4950HQ running with its TDP set to 55W (cTDP up).
2.5x HD4000 @ 650/1300MHz score (3DMark 11). How about actual games? Around 2x HD4000 performance is my bet.
Iris Pro is coming to desktops, close to 3x 3770K graphics score at 3DMark 11. 4770R is a 4C/8T chip @ 3.2/3.9GHz + GT3e (40 EUs + eDRAM) and only 65W TDP.
More here: http://www.anandtech.com/show/6926/intel-iris-iris-pro-graphics-haswell-gt3gt3e-gets-a-brand
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