I put together this chart of the average MacBook Geekbench scores, compared to the i5 variants of previous MacBook Airs and MacBook Pros:
MacBook Air vs. MacBook:
The m5 and m7 MacBooks outperform all prior i5 MacBook Airs in the benchmark. The m3 MacBook scores about the same as the 2014 MacBook Air for single core performance, and about the same as the 2011 Air for multicore.
MacBook Pro vs. MacBook:
The 2016 m7 MacBook is similar in performance to the 2014 and 2015 MacBook Pros. The m5 performs slightly worse than the m7, but still better than the 2013 MacBook Pro. The m3 MacBook performs similarly to a 2011 MacBook Pro.
Notice that there is a rather large performance jump between the m3 and m5. The performance improvement is smaller between the m5 and m7. But note that the m7 has a significantly higher clocked GPU than the m5, which Geekbench (a CPU test) won't account for. So if you're working with graphics at all, you might still want to get the m7.
MacBook Air vs. MacBook:
The m5 and m7 MacBooks outperform all prior i5 MacBook Airs in the benchmark. The m3 MacBook scores about the same as the 2014 MacBook Air for single core performance, and about the same as the 2011 Air for multicore.
MacBook Pro vs. MacBook:
The 2016 m7 MacBook is similar in performance to the 2014 and 2015 MacBook Pros. The m5 performs slightly worse than the m7, but still better than the 2013 MacBook Pro. The m3 MacBook performs similarly to a 2011 MacBook Pro.
Notice that there is a rather large performance jump between the m3 and m5. The performance improvement is smaller between the m5 and m7. But note that the m7 has a significantly higher clocked GPU than the m5, which Geekbench (a CPU test) won't account for. So if you're working with graphics at all, you might still want to get the m7.