Yea if you plan to overclock then find out what memory it ships with. I ordered the tv-out eVGA MX and it shipped with 6ns memory. A guy I know ordered the same card but without the tv-out and it shipped with 7ns memory. The highest his will overclock is 175 which kinda sucks when the Hercules can reace 210 (these are the memory speeds as the core speed really doesnt matter). Also you should find out what speed the card runs at at default. The nvidia drivers will only allow you to overclock a certain amount over the default speed. My card came shipped running at 150. The highest the nvivia drivers will let me overclock to is 190 when I am sure with 6ns memory I could hit 200 or 210.
2 Questions to ask
what speed is the memory
what speed is the memory set for default
Good luck the MX's kick a55 when overclocked!