https://wccftech.com/m1-imac-benchmark-beats-previous-imac/

Apple’s M1 iMac is significantly faster than the previous-generation 21.5-inch iMac, according to the latest benchmark scores. In fact, the multi-core results show that Apple’s custom M1 chip is a significant upgrade over the Intel processor running in the older machine.

Both single-core and multi-core scores of the M1 iMac have been spotted on Geekbench, with MacRumors providing a comparison of the 21.5-inch iMac’s performance results as well. The details are given below, and you will see how big of a leap the M1 chip offers over Intel’s 6-core Core i7-8700.