Hi there, I've ordered a Dell Latitude E6320 just yesterday but it's not too late to make a change. I configured it with 8GB RAM and the i7-2620, but now I'm a little concerned about the battery life. Do you guys think, that less RAM or an i5-2520 will safe me some battery life? After all it's the same dual-core, just 200MHz faster. I don't really need the RAM and the faster CPU but it wont cost me more, so I just configured it. What do you guys think? Should I change my order? How much extrabattery life will it bring? More than 10 minutes?