Here's how a custom 21.5-inch iMac with Intel Core i9 compares to M1 iMac in performance - 9to5Mac
Apple iMac 27" 5K Retina 3.6GHz 8-Core i9 AMD Radeon 580X - Studio Solutions
Core i9-10900K in a 27-inch iMac: Intel and Apple could combine to offer the world's fastest gaming processor in a refreshed all-in-one - NotebookCheck.net News