You can't upgrade everything in a laptop, but these three parts offer the most potential gain and are worth considering.

A fax card is a PC circuit board that is plugged into a computer and enables files to be sent and received on a hard disk by fax. A fax card needs a modem to operate and is usually built on the same ...

A printed circuit board that contains a complete computer, including clock, microprocessor, RAM, flash memory, Ethernet, I/O control and sockets. A single board computer is a self-contained ...