ati 5450

So I have an old GPU (MSI AMD Radeon HD 5450 1GB) which I brought in 2010 and I got a new CPU i5-4590 which comes with Intel HD 4600. I've done some benchmarks myself and come to the conclusion that my iGPU gives 10-20 more fps in every game than the dedicated one. My question is should I...

Guyz i hav intel i5 2310 2.9ghz,8gb ram,700watt psu,amd hd 7770gfx and i hav an intel motherboard(DH61WW).I wanted to know if nvidia is compatible with my motherboard and can my cpu handle gtx 770 and 760.Thank You