i wanted to boost my vid memory a little and it was only $50, so i thought going from a Evga 9500gt 512mb to a XFX 9500gt 1gb, would either be the same or better, but my WEI score went from 5.3 DOWN to 4.9? what gives? i did have the evga overclocked some, but cant find a overclcok utility from XFX. any help, opinion??? thanks!