Stupid Power4gear!!!

All of a sudden, i felt as though my screen was very dim. At this time it was plugged into the AC in thus running on super performance. Yet I still thought the screen didnt look like it was running at full brightness.

So I checked by unplugging it and running on battery and then changing to high performance...and yep...sure enough the screen brightens up!!!

However, I can't find where I change the settings. I dont know why the screen has all of a sudden done this but if anyone could tell me where to change the screen brightness configuration for each bios it would be appreciated.

And i have tried the going to the configuration menu in power4 gear, but when it shows me the stats for super performance, it doesn't have screen brightness as an option under the video drop down box.

this is the same for high performance.

thanks in advance

 

lol...

fn + f6....that fixed it.

But i'm not sure whether it has temporarily fixed it, so that when i turn the laptop off and turn it back on it will be back to being at half brightness. If that happens, then i guess you'll be hearing from me again.

 

Just a note, don't run on SuperPerformance while on AC, you're wearing and heating your CPU unnecessarily by keeping it at top speed. There's no noticeable performance increase from, say, HighPerformance where SpeedStep is used.

 

I don't think we can change the screen brightness option for modes intended to use while W3J is plugged in.

 

Just a question to E.B.E

I'm most likely wrong, but if there is negligible performance increase than isn't it also likely that there is negligible increase in the speed of the processor and of the bus, and therefore not particularly any more wear and tear?

Also when running the processor ID utility, there is no difference between the super performance and high performance cpu or bus speeds. So one could assume that there is no more wear and tear running the laptop on super than there is on high. However, that does cause one to question...what differences are there between super and high then?

But again...that's just my logic...which is probably whack.

Thanks though

 

I made one assumption: HighPerf uses Intel Speedstep, and SuperPerf locks CPU at max multiplier. This was true in my case. If this is not the case (might be, P4G is buggy and quite obscure), use smth else, lower than HighPerf, where SpeedStep is used.

Now, about Intel SpeedStep. It dynamically varies the CPU multiplier according to the CPU load. The overhead of the firmware which does this is negligible. It also reacts very fast (it can change the speed many times a second) so it will be fast in increasing the CPU speed when needed. That means that, when you start a CPU-intensive application with SpeedStep activated and the CPU at lowest multiplier, the performance of the CPU will be near to what it would have achieved if it had been clocked at top multiplier to start with.

I.e., you will see little performance difference between topping your CPU at max multiplier, and keeping it under the control of SpeedStep.

You *will* however see a significant in temperature=> increase in wear, increase in fan speed and noise, when the CPU always runs at top frequency.