The other big change comes in the graphics department: These are the first Macs to use Intel HD Graphics – and the first to use Nvidia’s automatic switching GeForce GT 330M GPU. You can’t compare the new i5 and i7 models with previous ones by looking at clock speed, as they are not single clock speed chips. For instance, a 2.4 GHz i5 may outperform a 3.06 GHz Core 2 Duo. These CPUs brings something new to Apple’s portable line, hyperthreading, which lets the dual-core CPU appear to the operating system as four cores.Ī further advantage of Intel’s “i” family of CPUs is that they can overclock themselves by 25% or more depending on the number of cores and processes in use.
However, because they use mobile Intel i5 and i7 CPUs instead of the older, less efficient Core 2 Duo chips, they are more powerful despite lower clock speeds. The 15″ and 17″ Mid 2010 MacBook Pro models have lower clock speeds than the models they replace.
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