If you don't have a PC, you can still contribute as it's not only your computer processing power that you can donate to science projects and philanthropic causes. Processors are everywhere. Even a flat screen TV is a computer; its software connects devices for sharing media and accessing Internet services.
Powerful processors are also found in home electronics and other Internet connected devices such as game consoles, tablets, smartphones, and televisions. This processing power has been being harnessed by Intel’s Progress through Processors project to tackle climate change modelling and to help researchers find cures for infectious diseases.
The Progress through Processors Application has collectively contributed over 143,000 gigaflops of computing time since its launch in August 2009. Its processing power is divided among projects such as Climateprediction.net and independent medical research projects such as Africa@Home. There are currently 30-40 thousand active participants and the project uses Facebook to sign up new recruits.
If you are interested in finding out more about the project visit Grid Republic.