Best Browser for Battery life?

I've heard that, and I use OS X as primary OS, but I use Chrome, and it is a pretty light browser, and I can get good battery.

With chrome there is a small tradeoff, based on some newer methods of power management, some cores can be significantly downloaded or turned off. since firefox only uses 1 core, it allows for that power management to better take place, and the addition of adblock and no script significantly reduces the resource usage of the browser since most of the resource intensive content will not load unless you allow them selectively.

But on the other hand, chrome offers better performance than firefox, IE, Opera, and safari when it comes to dealing with a large number of tabs. Even though the browser is single threaded, it distributes the workload for each tab across all CPU cores, allowing for overall better performance when dealing with multiple cores.

Another thing to consider that may be interesting is that opera is releasing a updated version which will allow for greater GPU acceleration than other browsers. While it remains too be seen how much content will be accelerated, it is worth mentioning since a GPU has a higher performance per wall ratio and in most cases, the GPU load put on by programs such as this will not be high enough to even cause the GPU to clock up. (this significantly improves battery life (eg look as hardware acceleration for flash) (especially on the mobile devices)