[Verizon Droid Charge] xdadevnube:
Take what I say with a grain of sand, I'm expressing my views without much scientific validation.

Keep in mind that overclocking is like icing on the cake. There are far more beneficial things like changing the scheduler to noop or deadline. Fugu tweaks and V-6 are highly recommended to improve responsiveness and improve your launcher resiliency. That said, I feel overclocking has its place and helps in many cases. I've noticed, in general, various tasks and some web-browsing will benefit from the increased clock speed. Some things don't ramp up the CPU very much and you won't notice much difference in that case.

I monitor my CPU usage with CPUNotify as well as OS Monitor.

I monitor the CPU temps with TempMonitor (it allows for a notifcation icon that shows the CPU temp.)

I use StabilityTest to check for overclock settings stability. The cool thing about Tegrak is that when you apply overclock settings on boot (paid version only) and you choose settings that crash the phone, the settings don't apply until most of the phone is already booted up, so you aren't stuck in an infinite boot loop of crashing fun. You should be able to simply change up the settings after they apply since the phone will be mostly idle by the time Tegrak settings are applied.

As for settings...

I use the Interactive X governor. I prefer this governor for its simplicity and ability to ramp up to high CPU clock speeds quickly. I enable the governor by typeing "su" and "ix enable" in Terminal Emulator when on Imoseyon's 4.0 kernel.

I change the "scaling min" to 200Mhz to avoid instability when CPU usage ramps down quickly.

Currently at CPU Level 0 I am at 1265mv Core Voltage, 1100mV (unchanged) Internal Voltage, and 1200 Mhz Frequency.

I don't actually change other CPU Levels.

Lately I've been just keeping at eye on temps so I haven't achieved my desired clock speed of a relatively low-voltage 1.4Ghz to 1.5Ghz.

Overclocking is very dependent on the particular sample you get. Some of us have "Golden Chips" and some of us have duds.

Your CPU should be totally safe at temps around 130 degrees F, although I suspect that it could even take higher sustained temps well above that if it needed. I don't actually know, this is speculation.

I like to keep my temps low in general, I rarely crack 100F with my current settings (weather is cool here.)

Overclocking computers is one of my hobbies, and its fun to dive into the phone side of things. I haven't been able to find a whole lot of information regarding overclocking the Hummingbird processor. People have overclocked to 1.6Ghz. Stability tests are essential to improve the reliability of your overclock. Die hards will run the tests for 24 hours to weeks in the computer realm. At least with computers its better understood how the stability test actually works. I run 24 hours of Orthos blend mode (Prime95) on each core.

With phones, its hard to say if it will truly be stable.

I test for an hour on the phone with StabilityTest and call it good. Hopefully in the future more information will come to light regarding how to properly overclock.

Remember, the other side of the coin is underclocking and undervolting. If you drop your voltage, you should see a nice increaes in battery life. If you drop your clocks, then you can drop your voltage even more. If you get your phone dialed in to where there isn't much background apps sucking juice- a phone that is UV/UC'ed should have excellent battery life.