Actually the computing power of Ingenuity surpasses one of the Perseverance rover (and probably by a lot). The rover has a radiation hardened RAD 750 CPU (based on PowerPC 750 architecture, which was introduced in 1997 to compete with Intel's Pentium II [1,2]) with 250-150nm technology process operating at 200Mhz[3]. Ingenuity's Snapdragon 801 can reach up to 2.5 GHz and is based on more energy-efficient 28nm modern (released in 2014) ARM architecture [4]. This CPU even has Wi-Fi and GPS, though probably not much of a use on Mars :)
1. https://arstechnica.com/science/2019/11/space-grade-cpus-how...
2. https://en.wikipedia.org/wiki/RAD750
3. https://mars.nasa.gov/mars2020/spacecraft/rover/brains/
4. https://www.qualcomm.com/products/snapdragon-processors-801