Intel 7th Generation Desktop vs Laptop CPU sample

Intel Core i3 7100 (Desktop CPU)

distributed.net RC5-72 workload sample – 80 packets.

[Dec 27 09:41:10 UTC] RC5-72: Summary: 80 packets (80.00 stats units)
                      0.00:37:47.78 - [149.06 Mkeys/s]

Intel Core i7 7500U (Laptop CPU)

distributed.net RC5-72 workload sample – 85 packets.

[Dec 27 11:04:28 UTC] RC5-72: Summary: 85 packets (85.00 stats units)
                      0.00:46:22.95 - [128.69 Mkeys/s]

Surprised that the i3 Desktop has the slightly better throughput on this workload. I somewhat expected that the i7 to win. The interesting thing to note though is that of course the i7 laptop CPU would be using way less power, thus generating much less heat. It makes me wonder though… how would an i3 laptop CPU perform in this test when compared to the i7 laptop CPU. Unfortunately I do not have one to test.