I say this completely on a personal level, and also looking at the stats. Looking at the stats, its a cheaper, and faster model. 9100 at 3.5GHz whereas 9400 runs at 2.9GHz. On turbo speed, it runs up to 4.2GHz, where as the 9400 runs at 4GHz. The price is 100 dollars less on the 9100. there are 2 more physical cores on the 9400, but that doesnt neccesarily mean its a bad desktop. Also, its CPU mark is about 2000% higher than the 9400.
