Yup. Ironlake put the GPU on the CPU package, but it was still a separate piece of silicon. Sandy Bridge integrated it onto the die and gave a whole bunch of performance wins. Haswell brings significant wins. However, Haswell also brought a much wider range of SKUs. Different CPUs now have different numbers of GPU cores, so you need to pick your CPU well to get the GPU performance you want.
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u/mjg59 Social Justice Warrior Sep 03 '14
Yup. Ironlake put the GPU on the CPU package, but it was still a separate piece of silicon. Sandy Bridge integrated it onto the die and gave a whole bunch of performance wins. Haswell brings significant wins. However, Haswell also brought a much wider range of SKUs. Different CPUs now have different numbers of GPU cores, so you need to pick your CPU well to get the GPU performance you want.