1. Apple - 27" Certified Refurbished iMac 5K - Intel Core i5 3.3GHz - 8GB Memory - 2TB FUSION DRIVE + 128GB SSD (2015) - Silver

With 14.7 million pixels, the 27-inch iMac with Retina 5K display is the most powerful iMac ever. It features quad-core Intel® processors, the latest AMD graphics, a 2TB Fusion Drive, and great built-in apps. All in the same ultrathin design that's just 5mm at the edge.

2. Apple - 27" Certified Refurbished iMac with Retina 5K Display - Core i5 3.2GHz - 16GB Memory - 1TB HDD (2015) - Silver

iMac Pro. Power to the pro.

The iMac is Apple's all-in-one computer, with the iMac MK462LL/A model featuring a 3.2 GHz Quad Core i5 processor. It was introduced on Late 2015. The iMac MK462LL/A is configured with 16 GB of RAM by default, with the option to upgrade to a maximum of 32 GB. The standard hard drive is a 1 TB (5400 RPM) Serial ATA (6 Gb/s)/PCIe and contains an AMD RADEON R9 video card. The MK462LL/A can be connected via 4 (3.0) USB ports and SDXC SD Card expansion slots. The MK462LL/A does not have FireWire ports or an ethernet port. The iMac MK462LL/A has support for dual-screen and mirroring capabilities, with a 5k native resolution of 5120 x 2880 (5k) and support for a second screen resolution of up to 2560x1440 (x2).

3. Apple - 27" Certified Refurbished iMac with Retina 5K Display - Intel Core i5 3.1GHz - 8GB Memory - 256GB SSD (2020) - Silver

The 27-inch iMac now comes packed with the latest processors, faster memory, powerful graphics, and ultrafast SSD storage. And the gorgeous Retina 5K display is better than ever with True Tone technology and optional nano-texture glass. With macOS and all its built-in apps, the 27-inch iMac is the total creative package—powered up.