PC Hardware → Re: [Laptop] Lenovo *NEW Questions*

If you're running an SMP slot, or multiple uniprocessor slots, you won't see it hit 3.1 GHz. That's what it hits when only one core is being stressed. When both are, 2.9 GHz is the max. As for dropping it to 2.5, I don't think there's a way to control what speed it's running at under load, other than disabling Turbo Boost in the BIOS (if your PC has that option). The CPU should drop well below 2 GHz when it's idle though.

For the battery, try doing a discharge/charge cycle with it before testing battery life.

So indeed, on battery using balanced energy setting and with F@H off and only browsing, it dropped to a little over 1 GHz.