HP has previewed its new range of Windows 8 PCs. Its new all-in-one PC line-up includes HP Spectre One, HP Envy 23, HP Envy 20 TouchSmart, and the HP Pavilion 20. The new generation PCs are expected to launch this fall.

HP's Spectre One is a top-of-the-line PC. The Spectre One sports a 23.6-inch full HD non-touch display, a wireless trackpad to let the user navigate through Windows 8 using the touchpad. The new HP PC also offers a 1920 x 1080 pixels resolution display and supports NFC technology, dubbed HP TouchZone. The HP desktop sports Intel's latest Ivy Bridge processors, 1GB Nvidia graphics card, 2TB of storage, and a solid-state drive for faster boot-up times. Moreover, HP has provided Adobe Photoshop Elements and Premiere Elements with the desktop. The company has also packed in two USB 2.0 ports, two USB 3.0 ports, and an HDMI connector. Measuring just 11.5 millimeters thick at its thinnest point, the HP Spectre One is the thinnest All-in-One computer in the world. The Spectre One will be available in November and its price starts at $1,299. 

HP ENVY 20 TouchSmart and the ENVY 23 TouchSmart are two AiOs that feature 20-inch and 23-inch touchscreen displays, respectively. Both the devices support 10-point multitouch as well as all of Windows 8′s gestures. Inside, HP has packed in Intel's third-generation Core processors, up to 3TB of storage, optional ExpressCache and solid state drives (SSDs), HP Connected Remote, Beats Audio, HP Connected Photo, and a HP TrueVision HD webcam.

The ENVY 20 TouchSmart will start at $799 and the ENVY 23 TouchSmart is priced from $999. Both PCs are slated to be released on Oct. 23.

The last in the new line-up is HP Pavilion 20 AiO PC that packs a 20-inch diagonal HD display. The Pavilion 20 PC also features HP TrueVision HD webcam, HP Connected Remote, HP Connected Photo, and HP Connected Music.

HP Pavilion 20 is expected to be available in the U.S. in October with a starting price of $449.