As you can see, one is 512 mb of DDR2 memory, and the other is 256 mb of DDR3 memory. From the reviews people have written, they run at about an equal pace ("I can run Crysis at medium settings, blah blah"). Their price is about the same, so... which one should I get? Like is one better than the other?
The DDR3 version is slightly better then the DDR2 version. You can check out Toms Charts, there is full tables there that show the difference.
But I have to say, unless your in 1024x768, I don't see that card running Crysis on anything but low..