The least expensive way to increase the performance of a PC is to limit applications that are running in the background. Check the Taskbar in the lower right corner of your screen near the clock. Do you need all those apps launching every time your PC boots?
WatchGuard
Seattle-based WatchGuard has deployed nearly a million of its integrated, multi-function threat management appliances worldwide to a diversity of businesses. We offer and deploy their products for our clients demanding the most stringent threat protection. Deployed in environments from headquarters to branch locations with and without e-commerce, this product line is consistently rated among the best solutions in the Internet threat protection landscape.