If you get the 4GB RX 550, and utilize VSR (Virtual Super Resolution) and GPU Scaling, you will see that it gives the 1050-ti a run for its money. I have had both cards (ti SSC), and I actually prefer the RX 550 due to its brightness and detail. There are other variables to take in consideration, like the monitor you are using, how well the CPU works with the GPU, as well as working with 16 GB memory.