I have a gateway MX6426. And my mom has the Dell Latitude D620 for work. She is getting a new laptop, so I might buy the D620. The specs of my Gateway (current) 2.1 GHZ AMD Turion 64 1Gb Ram 80 GB PATA 4200 RPM HD Would It be a downgrade to get the Dell? Its specs are Intel Core Duo 1.6 GHZ 1Gb RAM 40GB SATA 5400RPM. Would going to a Dell from gateway be downgrading. I will get a larger HD, but in short is the Core Duo 1.6 GHZ going to be faster than the AMD Turion 64?