PaulinMaryland said:Point well taken! I'll be buying the MacBook with the slowest CPU for the same reason. Performance is nice to have if you can replace the battery with a spare. But when your battery is captive, as it is in the MacBook (correct?), efficiency matters more.
Speaking of battery life, I had left my MacBook 2.0GHz on to drain its battery last night. The screen was set to turn off after thirty minutes, but it was set to never put the CPU to sleep and I kept Bluetooth and Wifi on with the Wifi connected to the router.
Ok, so nothing but Wifi was really running, but still, the thing was still on 11 hours later. I was impressed to put it mildly.