Im overclocking my radeon 6670 (yeah i know,lame),i reached 860mhz(800 default) core clock and 1000mhz(800 default) memory clock,is this memory clock of 1000mhz safe,my overclock is stable temps are super cool 50c at max, and it doesnt crash i've tested with furmark,but is it possible to like fry the memory chips or something ???