I currently have a Dell XPS Gen 4 computer. It's 3 1/2 years old. I am thinking about buying a Dell T5400 work station. Gen 4 has Pentium 4 3.4GHz processor. T5400 has Zenon Quad Core 2.0GHz processor. I know that 3.4 is more than 2.0. But with the quad core technology can I expect that it will be as fast or faster than the Pentium?