Apple iMac with Retina 5K display

Apple iMac with Retina 5K display

At first glance, the new iMac looks like many of its predecessors.

It has the same sleek aluminium chassis with black bezel around the display. At its sides, it tapers to a width of only 5mm thick. But it bulges at the back sitting on the aluminium stand, which has a depth of 20cm.

Its 27-inch Retina 5K display is its major highlight. The display has a whopping resolution of 5,120 x 2,880 pixels. In other words, it has 14.7 million pixels, seven times as many pixels as a full high-definition (HD) display and 67 per cent more than a 4K (3,840 x 2,160 pixels) display.

Once you look at the Retina 5K display, you will be wondering how you ever put up with full HD displays. Everything it displays is super crisp and sharp. There are no visible jaggedness with text or icons.

For photographers, videographers or video editors, this display will be amazing to use as it shows an eye-popping amount of detail.

You can easily pick out things you might not be able to see with other displays, especially those in the darker areas of images.

The display exhibits great colour contrast and wide viewing angles. There is only slight colour shift when you view the display from an angle.

I watched a few 4K movie trailers, including Interstellar and marvelled at the sharpness.

The tiny speakers at the display's base deliver good omnidirectional audio for its size.

Videographers can now edit 4K video footage in full size on this display and yet have enough display space for editing tools.

Using Final Cut Pro X, I was able to add text, effects and transitions to some 4K footage without a hitch.

The review unit came with a 3.5GHz quad-core Intel Core i5 processor, an AMD Radeon R9 M290X graphics processing unit (GPU) with 2GB of video memory, 8GB of system memory and 1TB of hybrid drive.

You can improve its performance by upgrading to a 4GHz quad-core Intel Core i7 processor, an AMD Radeon R9 M295X GPU with 4GB of video memory, 32GB of system memory and 3TB of hybrid drive.

However, you will have to make your choices before you complete your purchase - as everything is soldered permanently into the circuit boards.

The Retina iMac scored 3,880 in the 64-bit single-core Geekbench 3 benchmark test. This is a reasonable real-world test for typical consumer workload, as most applications rarely utilise multi-core processors.

By comparison, the late 2013 27-inch iMac scored 3,517 in a similar test.

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