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YouTuber upgrades base-model 5K iMac with seventh-gen Intel Core i7 processor, 64 GB of RAM, and more [Video] - 9to5Mac
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The 21.5-inch iMac unofficially supports up to Intel Core i9 processors; surpasses the 24-inch iMac with an Apple M1 SoC - NotebookCheck.net News
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