We can be brief about the performance of the Tegra 4. It's a very powerful chip, and it stands head and shoulders above all of the other SoCs used in Android tablets. The Tegra 4 has a GPU that's actually as powerful as the one in the iPad, which is definitely an accomplishment.
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