help regarding this graphics card

currently im using

mobo= 945gct-m2
processor = e2180 dual core 2.0g
ram = 1gb ddr2
vcard = winfast px6600 td 256 which is broken so im using my built in

planning to add another 1gb ram. but i dont know what vcard should i buy,im choosing between the two DDR2 GeForce 9500Gt, GDDR3 GeForce 9600Gt will a video card that indicates ddr3 work with my mobo and ram?but im using a ddr2 ram. does that mean i should use the ddr2?

also im a hardcore gamer and an adobe CS4 products user,if u can give me an advice on the upgrades i should do,just post it here.but no budget for the upgrade of board and processor. 

[Moderator]

DDR3 RAM on a vid card will work on that machine...has nothing to do with your onboard RAM.

ok thanks, but can i ask what is the purpose of the ddr3 or ddr2 use to describe a video card??and what are the things i should consider or remember when buying video cards?

[Moderator]

ddr3RAM is newer and faster...employed on mostly newer vid cards.

thanks for the reply and information.

[Moderator]

No problem...glad to assist.