ATI Mobility Radeon HD 3450 Overclock Problem

I have a Dell Studio 1537 with an Ati Mobility Radeon HD 3450 video card.
I red a lot info about this Video card, then tried to OC as here discribed - from the 3 post upwards till end of page.

I used the newest driver from the Ati/Amd homepage, which I modded with Mobility Modder. Then tried the AMD GPU Clock Tool - what didn't worked.
I tried then as on few places suggested PowerStrip. And instead of overclocking I did some kind of underclocking. Here u can see the differences:

and
1st thing was to uninstall PowerStrip, what didn'd helped.

The system became slower, on almost all doings.. When I opened the Clock Tool or Everest the clock settings varied..

Finally after few days observing - today - I rolled back the video driver, uninstalled the AMD GPU Clock Tool. After restart it seems that everything is how it was - as far as I can remember how it looked in Everest. I also monitor with GPU-z. But there are few differences. So I am not sure which program to trust. Here u can see prints of both:
and
And just as I am writing this, before a few minutes the Effective Clock in Everest was over 800 Mhz, and now on the second opening its again 504 MHz, than 800 again. Is this normal?

So I need some help in point overclocking. Is everything normal now. Because the most important is Everest showing me:
GPU Clock 110 MHz (original: 500 MHz) and
RAMDAC Clock 400 MHz
This two are now as before. And I presume the system is not so slow anymore. What would you say?

What is the best and safely way to OC? Has someone OC-ed the card successfully and how?

Thanks in advance.

 

They were using catalys 9.2 which was released last year. I personally haven't tested this setup. But according to some of them it only worked with 9.2 and mobility modder.

 

Monitor with GPU-Z, it will record and graph the clock speed changes.