The Lua is an entry-level mouse from ROCCAT, which is using an Avago ADNS A3050 optical sensor with a maximum DPI of 2000. The product comes with some features borrowed from the Savu like the lateral no-sweat plastic finish or the ultra-precise 2D scrolling wheel and is priced decently."
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips