Turns out there who just need a PC power is low. One of them is Pavilion p2 Series made by Hewlett-Packard (HP), which claimed only 90 watts of electrical power required for computational purposes.
Calling HP Pavilion desktop computer P2 Series is an environmentally friendly, because of low power consumption and use of easily recyclable materials. There are three models of the family launched the HP Pavilion p2 Series. The first products using the Intel G630T with a clock speed of 2.3 GHz.
While the two other products, using an Intel Core i3-2120T 2.6 GHz clock speed. Moreover, the three products amplified 2GB RAM, 500GB hard disk, Intel HD Graphics, and DVD drive. For the monitor screen, p2 Pavilion Series provides monitor measuring 15.6 inches and 20 inches.