i5 4590 processor paired with GTX 1080, 16GB DDR3 RAM, and an older motherboard setup.
i5 4590 processor paired with GTX 1080, 16GB DDR3 RAM, and an older motherboard setup.
Consider upgrading to an 11th or 10th generation Intel CPU such as the 11400f with a budget B560 motherboard. Regarding performance limits, it depends on the game and your settings, but usually the RTX 2080 will be constrained by the i5 you already have.
I don't have a system to evaluate, but I can help you assess performance if you provide relevant metrics or data.