INTEl Core Duo(Yonah) delivers little

PC World did some benchmarks on Core Duo (Yonah) based notebooks from HP and DELL, and found almost no improvement on business application performance and battery life. The only area Core Duo shined was in multi-tasking. So if you run two heavy duty applications the same time on your notebook, there will be a benefit from using Core Duo, but expect battery life to be even shorter in that scenario.