...battery life doesn't matter at all... I'm just wondering If the 8400 would have a positive effect on my laptop, for my main uses, browsing the web, watching video etc. Or will it have a negative effect, like making the laptop overheat , heavy, taking up ram etc? Anyone know what negatives the 8400 would have for my uses? And what advantages, if any? I got the extra money for the 8400, so I figure I'd get it, thinking it will improve the overall performance of my laptop...does this make sense? Please help...