Bought 650 ti a day back, 650 ti boost released today

I am feeling kind of bad that i just bought the GTX 650 ti a day back and a day later I see nVidia releasing their GTX 650 Ti boost edition which is 36-40% faster. A friend told me to sell this off as it is new. However, I feel that I should keep it because 1. I game at 1366x768. 2. I never use AA or MSAA. So, for me this card is more than enough it seems. But I am still confused because they released the 650 Ti Boost edition at THE SAME PRICE :|

 

I went for 650 Ti instead of HD 7850 because in my country the HD 7850 is significantly more expensive and in that price gap, I could buy a new cabinet which I do need if I don't go for 7850 and buy 650 Ti. Thus I went for 650 Ti.