clock speeds dont mean much if the rest of the specs dont stack up. you can have 2 cards that have the same clock speeds but if one of them has ddr3 memory and one has ddr5, theres a huge differnce. also the number of streaming processors makes a big difference. so does the amount of memory.
I agree, but the only difference between this 4830 and others are the clock speeds. In which case, this is the better one.