|27-inch 3.2GHz with Retina 5K display
5120 x 2880 Native Resolution
3.2GHz Intel Core i5 Quad Core
Turbo Boost up to 3.9GHz
8GB of 1600 MHz DDR3 RAM
1TB Fusion Drive
AMD Radeon R9 M390 with 2GB video memory
27 inch Retina 5K IPS Display
Whether your iMac is in your studio, living room, or kitchen, the display is the focal point. With a 5120 x 2880 resolution, the iMac with Retina 5K display features 14.7 million pixels, which allows for crisp, clear text and support for 4K photos and videos. The IPS panel allows for wider viewing angles so more people can enjoy the Retina 5K display without having to crowd around it.
AMD Radeon R9 M390 with 2GB
All the pixels in the world won't do you any good if you can't quickly and efficiently command them into action. That's why the iMac with Retina 5K display features a dedicated AMD Radeon M290X graphics card with up to 3.5 teraflops of graphics compute power. So you experience stunning motion graphics, jaw-dropping visual effects, and 3D graphics on the built-in Retina 5K display.
The iMac with Retina 5K display maintains its 5mm profile, which is up to 40 percent less volume than the 2011 iMac. Using an advanced welding method called friction-stir welding, Apple was able to join the front and the back of the iMac together directly.
Expand the capabilities of your Mac. Connect high-performance peripherals. Transfer data at high speed. Even daisy-chain multiple devices. And the iMac with Retina 5K display has Thunderbolt 2, delivering twice the bandwidth - up to 20 Gbps - for fast data transfers. While the Thunderbolt 2 ports double as mini DisplayPorts, the iMac with Retina 5K display cannot be used as a standalone monitor like its predecessor. It can, however, be used simultaneously with an external display and can output up to a 3840 by 2160 resolution.
With USB 3.0, you can transfer large files in seconds instead of minutes. Every iMac comes with four USB 3.0 ports - with speeds up to 10 times faster than USB 2.0 - and you can connect all your USB-compatible devices, including your iPhone, iPad, iPod or digital camera.
Mac OS X
The iMac with Retina 5K display ships with the Mac OS X operating system. With a redesigned interface, Apple continues their integration between Mac OS X and iOS devices. Relying on iCloud and your Apple ID, both Mac OS X and iOS work together to ensure you can switch seamlessly from your iPhone or iPad to your iMac with Retina 5K display.