The 550TI is not a good GPU. For the same price the Radeon 7750 destroys it, and the 7770 is way better for like a $20 difference.
Where Cooler Master's faults lie are with the fact that it tends to slap a lot of false labels and certifications on their power supplies (their 500W PSU actually puts out about 350W with 12V amps). It's essentially false advertising at its' finest. And they repeatedly do it and get away with it - like Lance Armstrong.
You're better off getting something like this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
It's a bit more but the power supply is one thing you will definitely reuse and this one has a good 5 year warranty.