Apple 24-inch iMac with Retina 4.5K display: Apple M3 chip with 8 core CPU and 10 core GPU, 512GB SSD - Silver (Latest Model) | NFM
Amazon.com: Dataram 512GB M.2 M-Key PCIe NVMe SSD for 2013-16 MacBook, Mac Pro, Air, Mini, iMac : Electronics
MAC SSD Solid State Hard Drive PCIE Gen 3.0X4 Nvme 1.3 3D NAND TLC Three-Layer,Support TRIM,T.M.A.R.T,Read Up to 2,000MB/s Compatible with Apple MacBook Air,MacBook Pro,iMac,Mac Pro,Mac Mini 512 GB - Newegg.com