I worked about 3 years with this card GTX 560ti http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-560ti I bought for 280 USD.
But it was broken a couple days ago, now I put NVIDIA GeForce 210 http://www.geforce.com/hardware/desktop-gpus/geforce-210 it is 45 USD.

I opened a couple o projects and compare as I remember how it worked on 560ti and I can not see big differences.
http://rocket3f.com