Here is my config
Graphics card 4870 512 ati radeon saphire
Memory 3x1G corsair 1600
Monitor LG flatron 2753v
I would like to buy a 2nd card to put in crossfire but I've heard that crossfire takes into account the worst of two. is what it's worth the cost of buying another 4870 to 2 gigabytes or even 1 gb or I should absolutely take the same card that I have now?
thank you for your answers