9to5Mac has a list of MacBook benchmarks for all three processor models. The top model scores pretty well considering the ultra slim power sipping nature of MacBook:
Combing through Geekbench 3 results, the 1.3GHz MacBook’s scores compare most directly to Apple’s 1.4GHz Macs, such as the entry-level 21.5″ iMac and early 2014 entry-level MacBook Air.
All results are in the linked post. Jeremy Horwitz | 9to5Mac