Which is the cheapest possible graphics card to run Watch Dogs..?

Watch Dogs is one of the most demanding games at the moment. in game-debate.com even a GTX 780 is mentioned for ultra requirements, a GTX 560 Ti for recommended req. and a GTX 460 (today GTX 750) for minimum req.

I would say a Radeon R9 270 will do pretty well, it's affordable and depending on the cpu will play the game on medium-high settings. the game also requires at least an Intel i5 and 8GB ram.

N.B.

the two clowns answering with GT 610 and HD 5450 are way off. to give you a comparison: even the integrated graphics of a Haswell i3 processor is better than those two gpu's.

Cheapest Graphic Card

ATI Radeon HD5450

http://goo.gl/quVSdd

INR: 2930

-----or------

NVIDIA GeForce GT 610

http://goo.gl/nak0sd

INR: 3322

These are the two only cheapest graphic cards that can support your game

before buying then just check if they are compatible to ur pc

Get Radeon Hd 7770 1GB GDDR5 It can handle watch dogs on med high settings

NVIDIA GeForce GT 610 is much better.