I'm currently using an nVidia ASUS ENGTS450 (1GB)... Am very happy with it's performance...Rendering is very quick too... (I did some Adobe Premiere movies...and also regularly use MediaCoder...) I got it for Rs.8K a month back... Now with the GTS 550Ti around the corner, you might as well go for it... CUDA really speeds things up in animation and rendering work...
As for the gaming spec (just for the sake of it!) GTS 450 gives ~50fps in NFS Hot Pursuit at max settings in 1440x900... And also ~40fps in Mafia2 at max settings at the same resolution... Haven't tested Crysis 2 yet...
It is buying time now.
Zotec GTX460 - Rs 10.6K
Zotec GTX460 AMP - Rs. 11.6K
Zotec GTX460 SE - 9.5K
Pl suggest which one to buy.
I assume thats ZOTAC...The Amp! versions are extremely overclocked...But I don't think that'll benefit rendering...Games will be faster though...Besides, overclocked cards run a bit hot... And the SE edition has less number of stream processors (288 to the normal 336, which will definitely impact rendering performance) So you can safely go with the vannila GTX460... (This is my opinion!)