I found this goodie when I was working with HP customer support, and I had hands on experience on this and many other laptops and desktops from them
As opposed to the other HP products, like HDX for instance, TX is a very lightweight and perhaps the thinnest laptop available. Its twistable screen is great to view. And its most important aspect is not that. TX, which stands for Touch screen. The laptop capable of being used as a tablet PC. The twistable screen can be turned 180 degrees and butted on the keyboard. Now the laptop can work as a normal tablet PC. The touchscreen is sensitive to your fingers and you can just operate the window with your fingers.
This entertainment laptop’s major plus points are its weight and its usability as a touch screen tablet PC. The laptop, which is shipped with Windows Vista is a high power high memory laptop and a perfectly portable on owing to its small size. However the screen size is lower. The resolution and clarity of the screen are but plusses.
The laptop has got a stylus pen that can be used to touch on the screen, instead of using the fingers. It has also got the remote control similar to the HDX laptop.
However, sometimes the tablet PC mode is prone to errors, sometimes you have to touch harder and firmer to make it work. Sometimes you hit somewhere and the movement happens somewhere else. These problems have to be checked for before purchasing the item.