i have a diamond 3850 512mb and when i play crysis on medium settings with 2x aa and when there are hella perople shooting me. it gets stuck like glitches or whatever u call them. i have a pentium d could that be the reason. should i overclock the card.
use the overdrive feature in the catalyst control center. there's an autotune feature, which will find the maximum overclock for your gpu and memory.