You cannot upgrade the RAM later. If you think you might need 24GB in two years, it is better to buy it now.
High-end configurations like the Apple 24-inch iMac with 1TB SSD are available if you need maximum local storage for large project files and the highest available 10-core processing power. Core Specs at a Glance Base Model High-End Model Chip M4 (8-core CPU / 8-core GPU) M4 (10-core CPU / 10-core GPU) Display 24-inch 4.5K Retina 24-inch 4.5K Retina (Nano-texture option) Memory 16GB Unified Memory 16GB or 24GB Unified Memory Storage 512GB to 1TB SSD Camera 12MP Center Stage 12MP Center Stage Crucial Buying Tips which apple imac should i buy
If you do photo or video editing, opt for the Apple 24-inch iMac (M4 10-core CPU/GPU) . This version often comes with extra ports and the option for 24GB of RAM , which is ideal for "Apple Intelligence" and heavy multitasking. You cannot upgrade the RAM later