Refurbished 21.5-inch iMac 3.0GHz 6-core Intel Core i5 with Retina 4K display and Radeon Pro Vega 20 - Apple
Apple launches new Retina 4K 21.5-inch iMac, all 27-inch iMacs now feature Retina 5K displays - 9to5Mac
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Amazon.com: Apple 21.5 inches iMac (Early 2019) with Retina 4K i5 3.0GHz 1TB Fusion 8GB (Renewed) : Electronics
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Apple iMac with 4K Retina display (21.5-inch, 2015) review: Apple packs more pixels into its smallest iMac - CNET
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Best Buy: Apple 21.5" iMac® with Retina 4K display (Latest Model) Intel Core i3 (3.6GHz) 8GB Memory 1TB Hard Drive Silver MRT32LL/A
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Late-2015 Apple iMac 21.5 with 4K Retina Display/3.1GHz Intel Core i5-5675R Quad-Core (21.5-inch, 8GB RAM, 1TB) (Renewed)
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Best Buy: Apple 21.5" iMac® with Retina 4K display (Latest Model) Intel Core i3 (3.6GHz) 8GB Memory 1TB Hard Drive Silver MRT32LL/A
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