Im using Nvidia Zotac from last one year. im using 2GB graphic crad.
It gives very rich visual graphics. The drivers update are also very easy.
I got this at an low cost with an offer. it is very nice for gamers like me. the Left 4 dead has became my favourite game forever. it just gives an nice experience to enter into the real world in front of the scary zombies. This is an real good thing ever.Nvidia zotac is the best graphic card ever.