[topgear]

SSC comes with pre oced bios - which has more speed than normal ones.

If you install two gfx card - say one ssc & one non ssc then it may cause prob coz two cards will run @ different speed or the ssc could downgrade to non ssc cards speed.
So it will give you less performance.

So it's recomended to buy another ssc edition card or card which has same clock speed as ssc edition.