@Rolo - Thanks for your support !!!
The Card is running well at default speed.
Actualy it runs at 200Mhz whitout a problem, no texture errorrs , everithing seems to work fine. ( Datasheet for VSA says 200 MHz and up...... ) Maybe the card it's getting a little bit too hot, but until i will change the coolers, i keep the window open
Everytime when i rise the speed, i let the card running a period of time to test his stability.
I didn't done myself the mod, somebody else did it for me. Let's say that i found the right Person for this Job.
He did'n use a heatgun to remove the cips. He used another Tool that heat all the pins at once. I will search for the tool name on the internet and post then.