[Xoom General] lindsaytheflint:
As I already said (multiple times), the findings are only indicative of potential CPU-usage battery savings, and those savings are only likely in high-CPU scenarios. I've made it very clear that there is no claim that in casual usage, that undervolting will make much difference. JUST IN CPU-INTENSIVE SCENARIOS. I've made this VERY clear, but you keep going on about it. Either you are unable to interpret basic sentences, or unwilling. READ THE WORDS!!!

Are you for real? Do you think I owe you something??? I'm providing this information freely, asking nothing in exchange, just trying to help people that are curious about either improving battery life, or undervolting just to play around. You're offering nothing but baseless arguments, for who-knows-what kind of aim.

I was surprised at the high level of battery savings too. But given that A. The only variable that changed was the CPU voltage, B. The tests were performed otherwise identically, and C. Each test was performed twice with similar results, the only conclusion I can come to is that the CPU voltage makes a big difference. Given that it's a known FACT that higher-temperatures result in higher battery discharge, and that undervolting DEFINITELY results in lower temperatures, I'm guessing that this is the other piece of the puzzle. If you have a better explanation, then provide it. Don't just say "no, you're wrong", ignore the actual numbers, and offer nothing.

So first you criticise me by pretending that I said undervolting will always help, and now you're criticising me for saying that undervolting won't always help?!? Suffering from MPD, or just a ftard?

Are you determined to see how many lines of BS you can fit into a single post? "More-or-less beta"?? Every OS widely used - Windows, UNIX, OSX, Android, & even IOS - has errors from time-to-time, usually caused by sloppy application coding rather than the OS itself. I personally find Android on my two devices quite stable, even with undervolting. Most FCs you will encounter are either going to be caused by badly-coded apps (ie, insufficient error-handling), or user error. If you're getting a lot of FCs, you may want to consider the latter cause.

Yes, of course there are also other things you can do to reduce battery consumption. Why not do everything you can? Another pointless statement.

Ok, all this rubbish aside, I'll clarify my points one last time, and try and keep it very simple for you:

1. Undervolting the CPU should be done gradually, and different voltages stress-tested to ensure they're stable. If you do this, an undervolted device can be just as stable as a stock device. Both of my undervolted devices are rock-solid (Xoom & SGSII).

2. An undervolted CPU will likely generate less heat, as less mV causes less heat.

3. As an undervolted CPU uses less power, it will use less battery. The battery is a component that stores power. If you use less of it, less will be used. Less power usage = less power used. It's really very simple to understand. To believe otherwise, ignores both logic, and test results.

4. I've performed 2 sets of tests, both performed twice, of high-CPU-usage scenarios. One test was with stock voltage, one with less voltage. No other variables were changed. The results indicated significantly less battery consumption when undervolted, in high-CPU-usage scenarios.

5. The tests are designed to only test CPU-related battery usage. Nothing else. The only component that is undervolted is CPU, so that's all I'm testing. Testing all the unchanged components is stupid.

6. For general usage (email, browsing, basic apps & widgets), the CPU is not as heavily used. But in situations where the CPU is heavily used (such as intensive games), these results show there is significant potential for battery savings.

7. Read number 6 again, as you keep missing it.

8. The only aspect that this undervolting thread is related to, is battery consumption caused by the CPU. No other components will reduce their power, just CPU.

9. If you want to see how much battery life will be saved by undervolting in general usage, you'd need to perform some extended tests, that were identical in both scenarios. For example: Play a certain game for 2 hours, then browse the web for 2 hours, then watch a movie for 2 hours, then make a phone call for 2 hours, etc, etc, until the battery went down to 0. You'd need to do this while on stock, then do exactly the same thing while undervolted, then do exactly the same thing again on stock, and again while undervolted, as you need at least 2 samples of each to ensure accurate results.

10. If you want to demonstrate some results showing how undervolting does not benefit, post some test results, rather than just illogical nonsense.

I do not get royalties when people undervolt. In other words, I have no vested interest in it, and I did not come up with the idea. I first learnt about it on other XDA forums, tried it for myself, tested a lot, enjoyed the extra battery life, and just posted information here for anyone else who wants to try it. People were kind enough to volunteer their time to post the information on the forums in the first place, so I recipricated. I've been using undervolted devices for a bit over a year now, and suffer no ill-effects. Such a shame when some people just criticise for the hell of it, and discourage information exchange on these forums.

As I said earlier in this thread:

1. If you're not interested in getting the most out of your battery, skip this thread.

2. If you're irrationally scared that undervolting will make your device unstable, skip this thread. (It will only be unstable if you haven't done it properly, i.e. without testing what limits your device can handle safely.)

3. If you just want to argue for the sake of arguing, skip this thread, and get a life.