Gtx 260 and psu 550Watt

shubham1401

Distinguished
Cheap PSU's like the huntkey you mentioned are not able to deliver their rated wattage.
The manufacturer use cheap quality components to reduce manf. price.
They are more prone to failure than some other good brand PSU.

And you must be knowing that when a PSU fails they can damage other components along with them!

SO don't be cheap in getting a nice PSU.

Keeping the price minimum,I would suggest a Corsair 450VX for your card.
Here's a link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139003