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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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Unannounced iMac appears in Geekbench results with 10-core Intel i9 CPU, Radeon Pro 5300 GPU - 9to5Mac
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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
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