š§ You cannot easily upgrade the memory on the 21.5-inch model like you could on the larger 27-inch version. Buy the amount of RAM you need upfront.
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The move to (M1, M3, and M4 chips) completely revolutionized Mac performance. A used or refurbished Mac mini paired with a budget 4K monitor will drastically outperform any Intel 21.5-inch iMac while remaining whisper-quiet and highly efficient. š§ You cannot easily upgrade the memory on the 21
Many used iMacs develop a slight pink or brown hue around the very edges of the screen as the glass and adhesive age. Look at a blank white screen to test this. š” The Smarter Alternative buy imac 21.5