What 256 mb Nvidia Geforce video card is good?

I'm planning to buy a video card that has a 256mb memory,and i want it to be Nvidia.Can you suggest what video card is good for playing these games?

*Dragon Age

*The Elder SCrolls Oblivion

*The Witcher

*GTA 4

...

Thanks|||Most modern cards have 1 GB on average. I'd go for a 460 GTX|||nvidia geforce 9500 gt. that's 1 gb.