Would my motherboard cause a bottleneck?

Mobsterman120

Reputable
Mar 2, 2015
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I am upgrading my computer soon and I am basically changing everything except for my motherboard and CPU. My concern is that my MOBO may already be bottlenecking my CPU, and that it may bottleneck my GPU since it only has a PCI-E 2.0. I have linked the MOBO below and would like some help as to whether or not it will bottleneck. I have a FX-6300 cpu, and am planning on getting some sort of 4GB GPU, something like a R9 290 or a GTX 970. So is there a bottleneck/will there be one? Thanks. If there is, what MOBO should I get?

http://www.asus.com/Motherboards/M5A78LM_LX3/