As a general rule of thumb you will see a significant performance increase whenever you can run your memory clock above the default 13.33x multiplier setting and that is what you will get from these modules. While the Patriot Division 2 Viper Xtreme modules may not have the best timings their overall performance is perfect for gaming and general purpose computing.
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