Testing conducted by Apple in July 2020 using preproduction 3.6GHz 10-core Intel Core i9-based 27-inch iMac systems with 128GB of RAM and preproduction 3.6GHz 10-core Intel Core i9-based 27-inch iMac systems with 64GB of RAM. Adobe Photoshop 21.2.0 tested using a 26GB file and rotate, unsharp mask, auto color, and scale functions. Performance tests are conducted using specific computer systems and reflect the approximate performance of iMac.

Testing conducted by Apple in July 2020 using preproduction 3.6GHz 10-core Intel Core i9-based 27-inch iMac systems with Radeon Pro 5700 XT graphics with 16GB of GDDR6, 128GB of RAM, and 8TB SSD, and preproduction 3.6GHz 10-core Intel Core i9-based 27-inch iMac systems with Radeon Pro 5700 graphics with 8GB of GDDR6, 128GB of RAM, and 8TB SSD. Tested using Pixelmator Pro 1.7 Sequoia by applying the Spin Blur effect to a 24 megapixel image with 100 layers. Performance tests are conducted using specific computer systems and reflect the approximate performance of iMac.

1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.

Testing conducted by Apple in July 2020 using preproduction 3.6GHz 10-core Intel Core i9-based 27-inch iMac systems with 128GB of RAM and 8TB SSD. Tested with FIO 3.19, 1024KB request size, 150GB test file and IO depth=8. Performance tests are conducted using specific computer systems and reflect the approximate performance of iMac.

Testing conducted by Apple in July 2020 using preproduction 3.6GHz 10-core Intel Core i9-based 27-inch iMac systems with Radeon Pro 5700 XT graphics with 16GB of GDDR6, 128GB of RAM, and 8TB SSD, and shipping 3.6GHz 8-core Intel Core i9-based 27-inch iMac systems with Radeon Pro Vega 48 graphics with 8GB HBM2, 64GB of RAM, and 2TB SSD. Compressor 4.4.6 tested using a 60-second project with Apple ProRes 422 video at 4096x2160 resolution and 23.98 frames per second. Performance tests are conducted using specific computer systems and reflect the approximate performance of iMac.

Display support varies depending on the model; seeapple.com/AppleiMac/specsfor details.

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