"The ASUS ENGTX560 Ti DirectXU II Top edition video card proved itself to be faster than the NVIDIA GeForce GTX560 Ti reference design in our testing, but that was expected since it operates at a 900MHz versus the standard 823MHz clock speeds. We also found that it ran cooler at full load and was able to overclock better than the reference design thanks to the voltage adjustment feature (VoltageTweak) in the SmartDoctor utility. Being able to reach 1GHz on the GeForce GTX 560 when overclocking was nice..."
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