Which PSU for my specs? Please help!

Axzevos

Honorable
Jun 12, 2013
628
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10,980
Hello, I'am going to build a computer. But I don't know which psu I should buy. I'am going to choose between this two: Silver Power SP-S750 750W PSU and XFX ProSeries Core Edition 650W PSU. So which one should I take for my specs:

Specs:

Cooler Master CM 690 II Advanced Nvidia
Silver Power SP-S750 750W PSU
Intel® Core i7-4770 Processor
Gainward GeForce GTX 770 2GB PhysX CUDA
MSI B85M-G43, Socket-1150
Kingston DDR3 HyperX blu 1600MHz 16GB
SSD: Samsung SSD 840 Series 250GB
HDD: WD Desktop Green 1TB

One more question. Is this case good?

And my last question is. How much better is the i7 than the fx 8350 if I'am NOT going to overclock.