If it works well enough for you, that's great, but... Core 2 Quad is definitely old. I don't think it can keep up with even a Kepler GPU, tbh.
For today programs and most games it's perfectly fine. War Thunder, Arma 3 and many other AAA runs max quality without issue; recently COD Warzone required to cut back clutter a little and that was it.
Synthetic benchmarks are almost irrelevant, we've been in good enough territory for a decade now.