WHEN Apple said its new 27-inch 5K Retina iMac was all about the display, they weren't kidding.

It's so eye-popping you would probably want to invite the neighbours around to show it off, as you would a new pool.

Watching a high definition video, you find yourself touching the screen to see if the faces are real. (Note to parents: expect a few more smudge marks from little fingers)

Its 5120 by 2880 resolution is four times that of its previous iMac - and seven times that of a HD TV.

The staggering 14.7 million pixels combine to provide picture clarity and picture depth that is almost more real than your living room around it. As one reviewer wrote: "I want to live in this screen.''

I found myself watching video after video of 4K YouTube clips. Even at 1080 resolution, the picture quality was exceptional.

The new Retina display iMac packs a lot of technology into such a compact all-in-one package.
The new Retina display iMac packs a lot of technology into such a compact all-in-one package.

Apple has come up with its own timing controller, or TCON, which ensures the pixels light up in the right place at the right time. It is powered by 40 gigabits per second of bandwidth.

And even more amazing is the fact that the iMac uses 30% less power than the previous model, despite all the extra firepower.

The iMac is definitely pitched at video makers, photographers, design studios as well as novices like me who just love to take good photos and videos and turn them into mini family productions.

Using Final Cut Pro X, you can actually view every pixel of a 4K video clip, along with the timeline for edits, all in one monitor. It's brilliant.

Zooming in on high resolution photos at full screen reveals detail you've never seen before.

But it's not just about the display.

As you would expect for a desktop starting at $2999, there's a lot of firepower inside, even with the base model.

The base system come with a i5 quad-core processor running at 3.5GHz, 8GB of RAM, which can be expanded to 32, as well an impressive graphics card with 2GB of RAM.

The system also comes with a 1TB Fusion Drive for faster reads and writes for frequently-used files.

Apple's new Yosemite operating system makes all your devices work together - whether it be taking a phone call on the iMac, reading an SMS from your phone, picking up a document you have been working on at the office or making a Face time call.

Air drop means you can transfer a video you have shot on your iPhone to the iMac at lightning speeds (and I'm talking seconds not minutes for short ) - without plugging in a cord.

The new Yosemite layout makes great use of that connectivity while producing super crisp text and icons on the Retina display.

To pack all this into an all in one super thin screen is amazing. My only complaint is I can't keep it. Going back to the old iMac this week will be tough.

Retina 5K Display iMac specs
5120 by 2880 resolution
14.7 million pixels
3.5GHz Quad-Core Intel Core i5
Turbo Boost up to 3.9GHz
8GB (two 4GB) memory
1TB Fusion Drive
AMD Radeon R9 M290X with 2GB video memory