The Raspberry Pi 3, which is the one I own, with its quad-core processor (Cortex-A53) is said to have ten times the performance of a Raspberry Pi 1 and benchmarking tests have shown that the Raspberry Pi 3 is approximately 80% faster than the quad-core processor of a Raspberry Pi 2 (Cortex-A7) in most tasks. On the other hand, The quad-core processor of the Raspberry Pi 4 (Cortex-A72) is said to have three times the performance of a Raspberry Pi 3.