In general, desktops out-perform laptops because their CPUs are clocked about 1 GHz faster (and burn more power).Īnyhow, if you want to know what sort of performance improvement to expect going from HD4000 to HD4600, try NotebookCheck's game benchmarks. Otherwise both desktop and mobile Haswell CPUs get the HD4600, except the lower power mobile CPUs get slower HD4400 and HD4200. Even with Haswell, the HD5000 and HD51000 are options only on their mobile processors. Ivy Bridge mobile CPUS got HD4000, while the desktop CPUs got HD2500. Sandy Bridge mobile CPUs used HD3000, while the desktop CPUs got HD2000. So they put the better integrated graphics on their mobile processors. Intel knew laptops frequently used the integrated graphics, while desktops had a discrete GPU added. Up until Haswell, it was the other way around. This is largely a factor of the energy savings features enabled on mobile platforms. A desktop CPU with a comparable integrated graphics adapter will out perform its mobile counterpart.
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