The monitoring device GPU.

Good day comrades. I remember I had a logitech keyboard with a computer monitor on which was displayed the information on the system.
Actually a question on the topic is: where to buy this arrive today? Not the keyboard. And any display that I can put on the table or to stick into the system unit and it will show GPU and CPU temperature?
Found a video of one of the actors who did such. But too lazy to shop for Alyx and do the soldering.
Maybe someone can give a link to device?
PS I know programs that do it. Need it device the device. With his display.