Futuremark 3DMarksUsing a mid-range VGA card (Geforce 7600GT) we can achieve some respectable scores in 3DMark with the Yonah clocked to 3.2Ghz, however the difference with the lower clocked Dothan is not very big, these benchmarks are mostly GPU bound.
Photoshop benchmarksDriverheaven made this pretty nifty
PhotoShop Benchmark which is basically a collection of actions performed on an image and the time measured for each operation.
Total time (lower is better):Dothan @ 1,73 GHz: 337,3 seconds
Dothan @ 2,6 GHz: 245,6 seconds
Yonah @ 2,16 Ghz: 264,7 seconds
Yonah @ 2,6 GHz: 228,2 seconds
Yonah @ 3,2 Ghz: 196,3 seconds
The Yonah is remarkably faster, but the differences are smaller than in the synthetic benchmarks