Jetson Nano compatibility in a graphics card

Trying to purchase the correct graphics card to mimic the Nano on a Windows 10 box.
which is the closest graphics card to match the Nano configuration?
I have checked the GT970 it is a Maxwell 2nd Generation, is that the same for the Nano ?

I believe the Nano is 5.3 compute capability, but I cant find the GT970 figure.
GT960/970/980 are all similar to the Nano ?