My Site - Intel Core m3 vs i5, What is Better? The Core i5 is more powerful than the Core i3 and so, in comparison, you will sacrifice much more performance. A Core m3 chip runs at roughly the same speed as an Intel Celeron 1020E The major difference is that the m3 has a TDP of 5W whereas the Celeron is 35W. ... I suggest m3 for battery, i5 for performance. Thu, 06 Dec 2018 14:27:22 UTC en