Amazon.com: 2021 Apple iMac with Apple M1 Chip with 8-core,iMac (24-inch, M1, 2021) / Apple M1 / 16GB / SSD 256GB,Amazon.com: 2021 Apple iMac with Apple M1 Chip with 8-core,Refurbished 24-inch iMac Apple M3 Chip with 8-Core CPU and,Apple 24-inch iMac with Retina 4.5K display: Apple M4 chip