Mining BTC with GPUs died out years ago.
yup and good years they were.
i will never get rid of my 6870 and 5830, they are largely responsible for my stack as while i did sell coins through the years i kept enough to make my wife and i extremely happy.. i keep meaning to mount them in a frame and hang them on a wall as they were so good to me.
I realized BTC was worth something in October of 2013, by that time GPU mining of BTC had already died out. I got some Asicminer Block Erupters and was so impressed with BTC and mining I went all in on a Black Arrow (named after a UK rocket and "space" program) ASIC pre-order as the market on Bitfury ASICs had dried up and I missed the deadline for the KnC Jupiter (more "space"). I saw all the coins the Jupiter customers were getting and Black Arrow seemed to have a good history of delivering miners based on Bitfury chips.
Black Arrow ended up stealing my money and never shipped the miner I ordered.
When I made the pre-order I had a small amount of money left and also purchased an old used HD 
It finally died edit:
It's been so many years it looks like I made a mistake, it was an HD 5970 that I originally got, another older dual GPU HD card. I got confused with this other dual GPU model, the HD 6990 was a more recent acquisition.
