I'd say something like a 1050 Ti would probably be a good choice. It's far better than your integrated graphics and can be run off of just the PCI-E slot, no extra power connectors needed, given you don't get one that requires extra power. Just make sure that it fits in your case.
Judged on current world polution rates and percentages on increase/decrease trends, we will approximately face extinction due to it within the next 2 Centuries. However this time we have may be increased as our current evolution is becoming more efficient and are creating methods of saving power and creating new inventions to stop and decrease and even replace things that create pollution. We should be know as the Poluting Evolution and hopefully next be known as the Cleanup Evolution to symbolise that we are no longer creating amounts of pollution capable of making us Extinct.