Apple iMac 27" 5K 2017 i7 4.2GHz 64GB 1TB Fusion Radeon Pro 575 4GB

All-in-one desktop for creative workflows

The iMac 27" 5K 2017 integrates a 5120x2880 IPS DCI-P3 display with a 4.2GHz quad-core Intel Core i7 and 64GB of 2400MHz DDR4 memory. It targets photographers, video editors and designers who need calibrated colour and strong single-thread performance in a single enclosure. The Radeon Pro 575 with 4GB VRAM accelerates GPU-enabled applications. Buyers who need user-upgradeable graphics or Windows-native hardware should look elsewhere.

Connectivity and expansion environment

Four USB 3.0 ports and dual Thunderbolt 3 ports provide high-bandwidth links for external storage, docks and additional displays. Gigabit Ethernet, 802.11ac Wi-Fi and Bluetooth 4.2 handle wired and wireless networking. The sealed aluminium chassis contains no optical drive and no internal drive bays, so all mass storage expansion must remain external. Builders who require internal PCIe slots or multiple 3.5" drive bays cannot use this form factor.

Storage capacity and memory headroom

The 1TB Fusion Drive combines flash cache with a mechanical disk for frequently accessed files and bulk capacity. 64GB of soldered DDR4 memory removes any future RAM upgrade path but handles large image libraries, multi-track timelines and virtual machines comfortably. The 4GB GPU frame buffer limits 4K video effects and 3D scene complexity; professionals working with 8K timelines or heavy compute workloads will exhaust VRAM before system memory.