The GTX 560 will get destroyed by playing Ark Survival even at low settings. Just like Ryan said, go for something in the 900 range if you want to have better performance. If your budget is $100 for a GPU, get this 950 that's on sale which can go down to $99. ($139.99 - $10 instant - $30 MIR)

http://www.evga.com/Products/Product...02G-P4-0954-KR