I just did a Geekbench 32 bit test on the latest El Capitan Beta. The scores were pretty amazing. I received my macbook 3 weeks ago. Macbook 12-inch Early 2013 (Intel Core M-5Y71 @ 1.30 GHz) My score 32 bit Single core: 2613 My score 32 bit Multi core: 5130 MacBook Pro 13-inch Retina early 2013 (Intel Core i5-3230M @ 2.60 GHz) Average 32 bit Single core: 2515 Average 32 bit Multi core: 5150 Highest score 32 bit Single core: 2678 Highest score 32 bit Multi core: 5484 I know that the processor can only do this for short bursts, for CPU-intensive tasks, macbook pro is better. It is a crazy fast laptop. Unfortunately i couldn't do a 64 bit scores, so i can't say anything about that. I was worried about the speed of this laptop, not anymore.