Is my psu good enough for a hd 6670?

Oct 5, 2014
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I am looking to buy a new graphics card. I have come down to the 6670(i am on a tight budget). I believe that there will be a significant improvement from the intel hd graphics 2500(what i have). I also plan to upgrade my ram to 8 gb. I have this psu:

http://www.flipkart.com/zebronic-zeb-450w-450-watts-psu/p/itmdt9duhfnxz7dz

I want to know if i can run my pc smoothly with this psu.

My config:
Intel core i3 3210 3.2ghz(comes with the intel hd 2500 graphics)
4gb kingston 1333 mhz ram
msi b75ma e33 mobo
1 tb seagate barracuda hard drive
lg cd drive
the above mentioned psu
Dell s2240l 21.5 inch led monitor