The benchmarks show a Geekbench 5 single core score of 1090 and a multi core score of 5688 for the base model with a 3.1GHz 6-core 10th-generation Intel Core i5 processor. Compare that to 1027 and 4746 for the base model 2019 27-inch iMac.
Graphics benchmarks for the new iMac with a Radeon Pro 5300 GPU are 36169 for Metal and 37664 for OpenCL. Compare that to 26568 and 26329 for the base 2019 iMac with a Radeon Pro 570X GPU.
The new 2020 iMac is now available for pre-order.
Take a look at the charts below for more details!