are 2 video cards better than 1 !!?

i just bought a computer it has 1 installed already the ati radeon 3650 .w/512mb dedicated memory ,but in my old computer i also have a ati radeon hd 2400 pro w/ 256 memory would it make a difference?? if i had both in there together?|||Sure it will! You will end up with a ton of device conflicts and even if you do get it running, you can only run one card or the other and not both at the same time.....leave it alone|||depends which you like better and how much memory you will use in the future|||yup