I bought a Morse Challenger i7 way back when Intel i7 became a thing and all I've upgraded thus far is the GPU and the processor cooling.
I'm currently giving an AMD HD 5700 a beating and it looks like it won't survive much longer. That is because it's built as if it's not supposed to cool itself and will eventually fry itself. Just look at this tiny heat sink:
I will replace the HD 5700 with an nvidia, a 1060 or something, whenever it decides to kick the bucket.