You could get away with that seasonic 300w because seasonic is good psu maker, and because your system with that gpu wont need more then 300w..but you will be cutting it close.
If you would be willing to not overclock cpu as well, it might be doable.
Overclocking cpu on that psu is really pushing it
If you would be willing to not overclock cpu as well, it might be doable.
Overclocking cpu on that psu is really pushing it