i see the ultra's and other cards with 800 mhz memory, and mine's is stock of 550. I think the max is 628, but I have no idea....does anyone know if the 800 is the EFFECTIVE while mine is the half like some oc progs report, or do the 800 - 1000 mhz ram actually 400x2, 500x2 and mine is 550x2?
