2D tests
Our single-threaded number-crunching test is significantly faster on the Core 2 Duo Merom core than on the Yonah, as specified by Shuttle, although there are too many platform differences between the two to solely attribute the lead to a much-improved CPU. AMD's Athlon 64 3500+ has a strong FPU and comes out on top here.
Moving on to dual-threaded media encoding, we see that the 4-issue 1.60GHz Merom puts daylight between it and a Yonah. Single-core CPUs may be somewhat legacy now, and you can see how they suffer as a comparison.
The same pattern emerges in the Cinbench rendering test. Merom > Yonah > single-core K8.
What the graphs ultimately tell you is that the Gateway laptop will run all your usual workloads - be they Office spreadsheets or music encoding - with consummate ease. Gateway's choice of CPU for a £500 laptop is excellent, really.