According to
MacRumors, the new benchmarks put the 2015 MacBook on par in terms of sheer numbers with a 2011 i7 MacBook Air. But, the true power of the new Intel chip cannot be determined solely by the GeekBench benchmarking tool because it does not measure the graphics capability of the new chip. In order to judge the true performance of the new MacBook, a more comprehensive test will have to be performed that tests the GPU and improved SSD.
Apple offers two additional processor upgrade options for the Retina MacBook, at 1.2GHz in the higher-end machine and at 1.3GHz as an optional build-to-order upgrade, both of which will see somewhat better performance results than the entry-level 1.1GHz processor.
The new Retina MacBook, which is Apple's thinnest and lightest notebook to date, will go on sale on April 10. Prices start at $1,299 for the 1.1GHz/8GB/256GB model and $1,599 for the 1.2GHz/8GB/512GB model.