Because the lower clock speed is a tradeoff for getting a 10nm CPU from Intel. You get a much better iGPU than 14nm, but you pay for it in clock speeds. This is nothing new since 10nm finally went online. Don't expect it to get better. We should be happy at this point that Intel can even ship enough of these out the door to fill Apple's production needs, grousing about the clock speeds should directed to Intel's feedback e-mail address.Looks great but why only 1.1GHZ Core i3 on the base model??? I hate how laptops come with such low speed, I would've liked to of seen at least a 1.4GHZ base option for $999.
Hell, Apple had to TDP-Up these CPUs just to get them past the 1GHz barrier...the Core i5 model clocks at 800MHz in it's base frequency to achieve a 9w TDP.