Is the Diamond AMD Radeon HD 7770 1GB GDDR5 Double Black Diamond OC Edition PCI-E Video Card good for gaming? And can it play most modern games at the lowest possible settings?
From your question , Let me answer it :
1 : It is not a great card for gaming but quite decent card out of all entry GPU
2: Yes it can play most of modern games at lowest settings.
One more :
Even it is a decent card , u will need a processor that make sure wont bottlenecking it ~