Hi I have Gainward Ti4200 128MB i think that 4.0ns Ram and i have overclocked it to core 311mhz, and memory now is running fine on 600, I wasnt trying any higher, could I burn my memory chips in one time, or I should try to overclock it to over 600 mhz until I will freeze up my system or I will see artifacts?? What do you advice me, core on 315 caused freeze, but memory on 600 running excelent, on internet preview of this card was that they reached 570 at best, but higher core they get also then mine, is this possible that I can run more then 600mhz?? when shall I stop in overclocking??