Move over, 7-inch and 14-inch tablets. Large-screen computing devices are being introduced into the market as Dell rolled out this week its XPS 18 model which features an 18.4-inch touchscreen, while InfoTouch rolled out its 55-inch AiO desktop.

Dell said it will begin to ship the new device by April 16th, joining the big league of other large-screen devices such as the Sony Vaio Tap 20 and the Asus Transformer AiO.

The Dell XPS 18, priced at $899, features Microsoft Windows 8 OS, a choice of i7 or Intel Pentium processor, up to 8GB RAM, a large hard drive and five-hour battery.

The 18.4-inch screen is inside a slim aluminium frame about 18 millimetrs thick and weighs just a little over 5 pounds. Despite its size, the Dell XPS 18 still qualifies as portable and offers different positioning options for its 1080p touchscreen. Three different angles are allowed by using the two magnetic legs on the back or users could use the $49 optional tilting metal charging stand dock for more angles.

Other specs of the Dell unit are a 3.5mm headphone jack, SC card slot¸Wi-Fi and Bluetooth 4.0, two USB 3.0 ports, dual speakers and a 720p webcam and dual microphone for vid chat.

Owners have the option to upgrade to a Core i7 and solid state drive, while the base model has the Intel Pentium processor, 4GB RAM and 320GB hard drive. It costs lesser than the Transformer AiO which has a price tag of $1,289.

While a number of tech enthusiasts like the Dell XPS 18 since it is considered better than the Surface Pro for the same price, others found it too big to be lugged around.

For those who would want a bigger screen, they can try the InTouch 55-inch AiO, which is priced at $5,000. It features basic 5-point touch gestures such as slide, tap, swipe, pinch and rotate and comes with a wireless keyboard an mouse for those who opt for off-screen control.

Its 1080p HD display has a 1920x1080 resolution. The device is actually a TV with a computer inside with Sandy Bridge Intel Core i5 processor, integrated graphics, 120GB solid-state drive, 6 USB 2.0 ports, 2 HDMI-outs and two gigabit-Ethernet ports in a mini tower that can be slid out and replaced with a new box from InFocus for those who want to update its hardware later