Windows/Mac/Linux: Opera has rolled out another update to its browser, this time introducing a power saver mode that supposedly gives you a 50 per cent boost in battery run time. The power saver mode reduces activity in background tabs, wakes the CPU less often, automatically pauses unused plug-ins, reduces the frame rate to 30 FPS, tunes some video playback codecs and pauses any animation on browser themes. In Opera’s tests, they found a battery life increase of about an hour over Chrome and Opera’s regular mode. If you’re working on a laptop, that’s a pretty big boost. We haven’t had a chance to verify how useful this is, but the logic is sound enough. You can try it out for yourself in the newest version of Opera.