When it comes to big screen all-in-one computers, Apple's iMac seems to rule the roost. PC users have plenty of choice at smaller screen sizes but there's a bit of a gap at the 27-inch end of the space-saving format. ASUS has finally introduced its ET2700 All-in-One PC Series to fill the void. Available with up to Core i7 processing power and up to 2TB of onboard storage, the new AIO models are also said to be the first in the world to offer 10-point multi-touch display interaction.

The new ET2700 All-in-One PC Series completes the ASUS line-up of new AIO desktop PCs announced earlier in the year. The tech world got its first sneak peak at the prototype of this new 27-inch giant at this year's CeBIT, followed by an appearance at Computex. Now the ET2700 Series is set to join its smaller brothers on the consumer shelf.

All of the available models feature an LED backlit, 1920 x 1080 pixel resolution, 16:9 aspect ratio MVA (Multi-Domain Vertical Alignment) panel that's said to eliminate color shift and promises a 178 degree viewing angle. There's a 2 megapixel webcam in the bezel and two members of the series can be attacked by up to ten grubby fingers at the same time.

Processing power depends on the model and configuration chosen. The non-touchscreen ET2700INKS is available with Intel Core i7-2600S (with a clock speed of 2.8GHz), Core i5-2400S (at 2.5GHz) or Core i3-2120 (at 3.3GHz). The ET2700INTS and the ET2700IUTS are the multi-touch behemoths and are both available in all of the processor options shown for the non-touchscreen model, with the ET2700IUTS benefiting from the addition of a Core i5-2405S processor option (at 2.5GHz).

Graphics capabilities are also model dependent, with the ET2700IUTS making do (if that's the appropriate phrase) with Intel HD while the other two gain NIVIDIA's GT 540M GPU. They're all available with up to 2 TB of HDD storage, up to 8 GB of DDR3 RAM over two slots and slot-loading DVD or Blu-ray optical drive options.

Common to all models is an enhanced version of SonicMaster technology (said to have been finely-tuned by audio experts for distortion-free clarity), DTS Surround Sensation UltraPC surround sound technology for claimed life-like immersive audio, and an optional external subwoofer featuring a 580cc resonance chamber for some extra low end boom to complement the onboard 3.5 W stereo speakers.

Connectivity is represented by two USB 3.0 ports and a combination eSATA/USB 2.0 port (along with the audio in and out jacks and a media card reader) on the side; and two further USB 2.0 ports, a VGA input and a HDMI around the back, the latter allowing for connection to a games console. Users will be able to get online via the included Gigabit Ethernet LAN port or wirelessly courtesy of 802.11b/g/n Wi-Fi capabilities.

The ET2700 All-in-One PC Series is supplied with either Windows 7 Home or Professional, and can be had with wired or wireless mice and keyboards. A VESA wall mount is sold separately.

UPDATE: ASUS has told us that prices will start at US$1,499.