Super Power Saver / Presentation ONLY for battery?

Hi would any of the following lower the Ghz of processor
when using AC (not battery):

• Super Power Saver (does this work with AC?
• Presentation (does this work with AC?

These settings are listed in dropdown of my Power Schemes, among "minimal power mgmet" and "high battery performance"

I'm trying to achieve lower power (while still a modicum of efficiency), rather than the current Thinkpad Default its set at.

Would it be risky for me to click any of the above settings other than Thinkpad Default, in order to try them out? If so, not sure which to try first.

Thank you.

 

Of-course it is up to you based on what you are doing to switch around

I have a Thinkpad also and there is a lots of benefit to using (and tweaking) those settings. With my system in "Maximum Battery Life" i can get closer to 4.5hrs (Thinkpad T410s) vs on "Balanced" or "Thinkpad Default" getting me 3.5Hrs. Changing said settings however means some stuff gets turned off which you may or may not like.

To answer your question though, "Power Saver" and "Maximum Battery Life" restricts the CPU to only 50% of it's maximum speed. However in "Thinkpad Default" the CPU runs at the slower speeds anyways ONLY speeding up when something you are doing requires more processor speed.

 

Please I was asking about usage with AC connected.

Not battery.

Also, what about "presentation" & "super power saver"
on AC?
( not battery)

would either be risky to try?

 

I'm not familiar with those power schemes. Are they ThinkPad specific ones? In any case, one of the main ways to save power is to drop the clock speed of the CPU. These will probably do that. It might not be as aggressive on the AC power as on battery.

There is NO risk involved. Try them and see which works for you.

 

Thanks for the assurance of non-risk!

Those schemes are in the drop-down list on my X31 thinkpad.
I doubt anyone can guess the reason I'm interested in trying them.

 

An older laptop probably running XP. I haven't looked at the XP power scheme names for a while.

Hmm, the battery is probably dead and you are running on an external supply that isn't as good as it should be. Are you running on an external battery of some sort? Alternatively you are trying to reduce the heat and hence prevent the noisy fan from running.

 

sorta.. (i sorta feel like the ex-French or Soviet underground..


For a fact, I haven't found even one comprehensive online article geared to dummies which analyzes all the power guzzling (heat emitting) components of laptops/and/desktops with a fine-tooth comb.
Geared to people seeking to reduce power, yet simultaneously achieve a semblance of performance required these days.

As just an example, below is an excerpt I received from an expert (who's also a software developer), albeit alot of it is over my head. Also, when I stupidly explained why I want such info, the discussion immediately deteriorated into pre-conceived assumptions & so forth.

Excerpt:

As I said, the above excerpt is over this dummie's head.

 

I have to admit I haven't looked for it, but I would have thought something existed for the desktop components. For laptops, they are sold as completed units, so I wouldn't expect to find it. Reviews will state battery runtime but a few will state the actual power usage.

That hurt my brain. I had to reread the first paragraph a couple of times. All he has really said is that a big screen uses more power (bigger screen needs more back light, hence more power used). And the second one says that a GPU works harder (uses more power) for a higher resolution screen. And it works harder if what it is displaying is more complicated. The only addition is that how the work is shared between the GPU and the CPU is dependent on the hardware and software in use.

 

Thanks again.

So the bottom line, is that smaller screen & lower resolution is what I want.

The latest I'm going nuts with, is that I just bought a used T41.
Yes, I know it's not the most ideal for me, since actually I require a much lower ghz, but the only way I can find out is to try it once & for all.

So [aside from it reeking of smoke & having a quite bad scratch on cover] I've no idea what to do with it, because:

Its dock comes with a lock & key
(unlike the current X31 which has a heavier dock without a key.

I tried finding a youtube video to figure out how the heck to dock this thing, since the demo engraved on the dock is clear as mud. But couldn't find any demo - except for T40, where the guy displaying it had already docked it, for crying out loud.

Hope nobody minds my squeezing this OT question here, but PM would be appreciated