A 5770 is about the same performance as my 260gtx. I'm getting 3k with nearly max settings at 1080p, 5k on max settings at 720p, so it could work for the op. I do agree with Abriael that the card is way past it's prime. Even if the current system could bottleneck a newer GPU, if you plan to further upgrade your PC in the next years, getting a stronger GPU now is not a mistake. The difference between two generations of a same-class GPU is not big. For example, a 460gtx performs nearly the same on the benchmark as my 260gtx