Ive got a gigabyte radeon 9200se. I tried using software like powerstrip to tweak my gfx card but i dont experience any big performance gains. This card runs at about 200 mhz clock speed and 166 mhz memory speed. i tweaked it to abt 211 mhz engine speed a and 173 mhz mem spd. I also heard that 9200, 9500 cards a re locked from overclocking when using catalyst 3.3 upwards is this true?