I have ps 600w ( pin 6+2, rtx 2060 needs 8, but 6+2 is ok?), and my cpu is i7-4770. I know , that it should be ok, but some friends tell, that your mobo is too old for rtx2060 and it will not run. Difference in years doesn't matter as long as mobo has pci-e 3.0?As long as your power supply is powerful enough (atleast 520W) and has the required power pins, you should be good.
But with rtx 2060 will not be a bottleneck? Maybe i should buy 1070 ( 1070ti too expensive for me)? Or 2060 will be ok ?An RTX 2060 will be totally fine but I would not recommend anything above a 2060 with your current PC because the 4770 will surely be a bottleneck.