The iMac model measuring 5mm at its thinnest point. This was partly achieved by using a process called Full lamination. The display and glass are laminated together eliminating a 2 mm gap between them. The 21.5 in and 27 in screens remained at their previous resolutions, 1920×1080 and 2560×1440 respectively.

The standard specification is  8 GB, with the 21.5 in model supporting up to 16 GB and the 27 in model supporting up to 32 GB. The iMac uses Intel’s Ivy Bridge micro architecture-based Core i5 and Core i7 microprocessors.

Video cards are now Nvidia as standard. USB 3.0 ports are now included for the first time. The iMac also features the option of a Fusion Drive which combines an SSD and a conventional HDD to create more efficient and faster storage.

On iMac model uses the  4th-generation Intel Haswell processors and Nvidia 7xx series GPU, promising up to 1.4x improvements in performance. It also has 802.11ac Wi-Fi, which is capable of reaching speeds up to 1300 Mbit/s and PCIe-based flash storage, offering up to 1.5x the performance of previous-generation (Ivy Bridge) iMacs. This applies to both the Fusion Drive and pure-SSD options.

iMac Models

iMac 21.5-inch (ME086)

iMac 21.5-inch 2.7GHz quad-core Intel Core i5 (Turbo Boost up to 3.2GHz)

  • 8GB of 1600MHz DDR3 Memory
  • 1TB SATA Hard Drive
  • Intel Iris Pro Graphics
  • 21.5-inch LED Display with IPS technology
  • 1920×1080 native resolution
  • FaceTime HD camera built-in
  • 802.11ac Wi-Fi and Bluetooth 4.0 Wireless built-in
  • Stereo speakers, Dual microphones and Headphone / optical digital audio output port
  • Ports: 4x USB 3.0, 2x Thunderbolt, 1x Gigabit Ethernet, 1x SDXC card slot

iMac 21.5-inch (ME087)

iMac 21.5-inch 2.9GHz quad-core Intel Core i5 (Turbo Boost up to 3.6GHz)

  • 8GB of 1600MHz DDR3 Memory
  • 1TB SATA Hard Drive
  • NVIDIA GeForce GT 750M Graphics with 1GB GDDR5 memory
  • 21.5-inch LED Display with IPS technology
  • 1920×1080 native resolution
  • FaceTime HD camera built-in
  • 802.11ac Wi-Fi and Bluetooth 4.0 Wireless built-in
  • Stereo speakers, Dual microphones and Headphone / optical digital audio output port
  • Ports: 4x USB 3.0, 2x Thunderbolt, 1x Gigabit Ethernet, 1x SDXC card slot

iMac 27-inch (ME088)

iMac 27-inch 3.2GHz quad-core Intel Core i5 (Turbo Boost up to 3.6GHz)

  • 8GB of 1600MHz DDR3 SoO-DIMM Memory
  • 1TB SATA Hard Drive
  • NVIDIA GeForce GT 755M Graphics with 1GB GDDR5 memory
  • 27-inch LED Display with IPS technology
  • 2560×1440 native resolution
  • FaceTime HD camera built-in
  • 802.11ac Wi-Fi and Bluetooth 4.0 Wireless built-in
  • Stereo speakers, Dual microphones and Headphone / optical digital audio output port
  • Ports: 4x USB 3.0, 2x Thunderbolt, 1x Gigabit Ethernet, 1x SDXC card slot

iMac 27-inch (ME089)

iMac 27-inch 3.4GHz quad-core Intel Core i5 (Turbo Boost up to 3.8GHz)

  • 8GB of 1600MHz DDR3 SoO-DIMM Memory
  • 1TB SATA Hard Drive
  • NVIDIA GeForce GT 755M Graphics with 2GB GDDR5 memory
  • 27-inch LED Display with IPS technology
  • 2560×1440 native resolution
  • FaceTime HD camera built-in
  • 802.11ac Wi-Fi and Bluetooth 4.0 Wireless built-in
  • Stereo speakers, Dual microphones and Headphone / optical digital audio output port
  • Ports: 4x USB 3.0, 2x Thunderbolt, 1x Gigabit Ethernet, 1x SDXC card slot