Comparison of mobos

PCPerson5234

Honorable
Nov 19, 2013
16
0
10,510
Hi,
I'm planning on making a gaming pc with a gtx 770 4gb and intel i4670. I want a motherboard with two pci express in case I want to add another graphics card in the future. Both of these motherboards have 2 PCI express slots. Why is one better? Is it necessary?

Thanks