You're new here so you'll learn how this works in the CPU and especially the GPU sections.
This stuff is REALLY important and can be said to be directly connected to ego and penis size. People care very deeply about AMD v INTEL, Nvidia v AMD. Best of all, they become 'proud' to be in a certain camp. Some people even become 'offended' by the other camp whose citizens in return becomes offended by his camp.
Then there's the turncoats. A little spotty nerd who swore by AMD his whole life only to renounce his allegiance, buy Intel and spend a lot of important time arguing with 'Billy324', 'BlsckKnite' and 'Seanie18' about why Intel trounces AMD. Now take into account that the improvement in gaming is pretty much ZERO. And gaming is all that's important here.
Fella, I could go on but you get the idea. Soon you'll see too.