The answer is yes on both of your questions, and NO YOU FUCKING MORON DON'T BUY THAT FROM THE FUCKING BRICK AND MORTAR.
You can get the 465 online for like 250$ and the gtx260 for 150$
http://www.newegg.ca/Product/Product...82E16814125332
There is your GTX465 for the same amount you were about to pay for your GTX260.