Aurora R13, upgrade to RTX 4070 or better?

for 4090 you would need to upgrade psu too if you bought the entry level psu in original configuration

Would have to look here for card dimensions that will fit inside the R13 case.

Then you need to verify power requirements of the card.

Lastly you will need to make sure you have the correct power connector available as the 4000 series uses a special power connector.