Nope, Your PSU is way below what it can handle. And as for your computer.. If im looking at this right, You have a pentium CPU, which will definitely bottleneck a 780 ti.
I would reconsider on buying a 780 ti, and possibility getting a whole different PC all together. with that lump some of money.
IF the above suggestion does not interest you, than I would buy a bigger PSU at least 600w(for headroom) and maybe a 760 instead of a 780 ti.