n53sv - nVidia GT540m performance w/o battery

I got to this forums through Google and posted this on the wrong section, so now I do it wright

Hi guys, I'm Argentinian and recently got an ASUS N53SV, which specs are:

Intel Core i5 2430m
4gb ram
750gb hdd
nVidia GT540m 1gb - specs AT STOCK
Win 7 64 bits

I have to say, I know NOTHING about gamer notebooks nor their gpus, gpu clocks or voltages.-

The thing is, as I began to use and test the capabilities of my notebook, also checked over a lot of forums about the performance of its hardware, finding a lot of threads talking about latest games running on mid-low graphics in order to achieve a playable amount of FPS. Ok, that was fine for me, since I bought this notebook as a modest replacement of a desktop machine because I have little space on my appartment, so, as I'm a casual gamer (because of my full-time job, not because I don't like it, which I do) the gamer aspect of the laptop wasn't a problem.

But, when you know that you can run a game, you'll always want a better one and with the sharpest graphics... its a fr***ing curse

Anyway, started installing games like Deus Ex HR, FO3, even Rage (wich runs surprisingly smooth even with a high resolution -HD- and graphics settings at high) and finding that it can take some of them quite well, at around 40/50 fps in some cases, with the stock specs. That was until I tried Skyrim, which is the game that I wanted to play the most, even when I already finished it on desktop pc, and, as it have been told before on countless forums, it's really a heavy load for this gpu having to low the res and graphics to mid-low... Another game that forced me to almost uninstall it was Street Fighter IV, since its fully animated backgrounds make it run at around 20 FPS if you happen to have Ambient Occlusion activated on the GPU's global settings, as I did at first until find out.

Obviously, dedicated gpus eat battery in minutes, so, when Windows warns about low battery charge, I plug it, and continue to play while charges (always unplugging it after a while), nothing weird.

NOW, I DO WHAT'S SUPPOSED TO BE THE RIGHT THING, USE IT PLUGGED WHILE I CAN, WITHOUT THE BATTERY.

Also, noticed some performance boosts at certain moments while using the notebook, that I didn't associate to any reason until I gave it real thought and came to the theory that is was WHEN PLUGGED, theory confirmed as I began to use the notebook plugged without the battery, and BAM! ALL THE GAMES IMPROVED THE PERFORMANCE REACHING OVER 60 FPS, INCLUDING SKYRIM AT HD GRAPHICS WITH SSAO ACTIVATED! Also installed Crysis 2 with Hi-Res pack, HD res, all Ultra settings but Water, hig-res textures activated and Tesselation, running at least at 40/45 fps as it runs undeniably smooth for those settings. The only thing about it is that the graphics look blurry no matter Blur is activated or not, kind of lacks definition. Skyrim runs also at least at 50 fps with all settings high except for FXAA and some settings regarding decals (as I took the inicial settings from a video on Youtube where some guy plays it at 1080p on mid settings)
Is right to say all my drivers are up to date

As nice and happy this phenomenon is, for me is also worrying as nothing comes freely... So got nVidia Instector, HWinfo, AIDA 64, GPU-Z and RealTempGT and began to control the temps (always less than 65/67 celsius max since I don't game without my CoolerMaster Notepal U2 that I bought for this notebook) and the spec that worries me the most, VOLTAGE.

At first, voltages of the gpu were always around 0.83v (pressumed stock), at least when paid little attention. But as I became aware of the potencial problem, find out that when loaded or nVidia Inspector is running, it reaches a constant 1v (!), which was high for me, as I don't know much of this matter. It also ranges from 0.83, 0.86, 0.9x (or something, I'm writing this at work) to 1v.

SO, THE POINT AT LAST: Is it normal? Am I slowly frying my gpu gaming while plugged? I read somewhere in a forum, that someone suggested this gpus have a range of 3 or 4 different voltages for different power requirements, but it was the-only-hint-on-the-entire-internet about it, or stock voltages, everyone talks about overclocking but few about volts.
As I bought this as desktop replacement, and use it plugged without battery, I'm affraid that an overvoltage is causing the performance boost as burns my gpu or other hardware on the background...
So PLEASE, as much as I like the recent performance (started using it plugged w/o battery 3 days ago, and own the notebook for about a month), it also worries me a lot, since there's no thread made to settle this matter, or at least accurate information about stock voltages on this gpu.

Could it be my battery? Undervolting everything?

Sorry about the massive post, and forgive my crappy english. Thanks in advance.

Victor

PS: If this shouldn't be posted here but on another threads, forgive me, and redirect me to it, please.